Select ALL the correct answers. Aaron collects sports cards. He had 150 cards in his collection. His friend gave him n cards. He now has 186 cards in his collection. Which equations correctly represent this situation?
a. n - 186 = 150
b. 150 + 186 = n
c.186 - n = 150
d.n + 186 = 150
e.186 - 150 = n
f. 150 + n = 186