$\"\"$

The inequality is $\"\"$ .

Let $\"\"$ and $\"\"$ for $\"\"$ .

Verify the option.

Option A: $\"\"$ (Substitute $\"\"$ and $\"\"$ )

Option B: $\"\"$ (Substitute $\"\"$ and $\"\"$ )

Option C: $\"\"$ (Substitute $\"\"$ and $\"\"$ )

Option D: $\"\"$ (Substitute $\"\"$ and $\"\"$ )

Therefore, the greatest value is $\"\"$ .

$\"\"$

Option B is right choice.