Briana has 1 red, 1 green, and 1 blue mechanical pencil in her backpack. All of the pencils are the same size and shape. She also has 1 red, 1 green, 1 blue, and 1 yellow eraser cap in the backpack. All of the caps are the same size and shape. Briana will randomly select 1 pencil and 1 cap. What is the probability that she will select a pencil and a cap that are the same color? Select one:

1/7
1/12
1/4
1/3