Mathematics

Marques Mckay

8 March, 19:21

You have two boxes of colored pens. The first box contains a red pen, a blue pen, and green pen. The second box contains a yellow pen, a red pen, and a black pen. What is the set that represents all the pens?

A. {red pen, blue pen, green pen}

B. {red pen}

C. {red pen, red pen, green pen, yellow pen, black pen}

D. {red pen, blue pen, green pen, yellow pen, black pen}