In Order to Simplify the Expression 3-5 with Color Counters

Multiple Choice

In order to simplify the expression 3-5 with color counters, which of the following would need to be added to the work mat?

A) 2 yellow and 2 red counters.
B) 3 yellow and 3 red counters.
C) 5 yellow and 5 red counters.
D) 3 yellow and 2 red counters.
E) 2 yellow and 3 red counters.