A Package of Self-Sticking Notepads Contains 6 Yellow, 6 Blue $\frac { 1 } { 2 }$

Multiple Choice

A package of self-sticking notepads contains 6 yellow, 6 blue, 6 green, and 6 pink notepads. An experiment consists of randomly selecting one of the notepads and recording its color. Find the
Probability that a green notepad is selected given that it is either blue or green.

A) $\frac { 1 } { 2 }$
B) $\frac { 1 } { 4 }$
C) $\frac { 1 } { 12 }$
D) $\frac { 1 } { 3 }$