$\"\"$

Green marbles in the jar : $\"\"$ .

Red marbles in the jar : $\"\"$ .

Yellow marbles in the jar : $\"\"$ .

The probability of selecting an yellow is $\"\"$ .

The required probability of selecting a yellow marble is double to the original : $\"\"$ .

Let $\"\"$ be the number of yellow marbles would need to add to the jar to make the probability equal $\"\"$ .

$\"\"$

Therefore, the number of yellow marbles is $\"\"$ .

$\"\"$

Option D is the correct choice.