$\"\"$

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(a)

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The statement is $\"\"$

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Consider $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore, $\"\"$ .

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The statement is true.

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$\"\"$

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(b)

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The statement is $\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore, $\"\"$ .

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The statement is false.

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$\"\"$

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(c)

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The statement is $\"\"$

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Consider $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore $\"\"$

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The statement is true.

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$\"\"$

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(a) $\"\"$ is true.

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(b) $\"\"$ is false.

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(c) $\"\"$ is true.