Matthew has 4 books in his backpack. He has 4 times as many books on his bookcase at home. Which equation represents how many books Matthew has on his bookcase?
A. 4 x 4 = 16
B. 4 + 4 = 16
C. 4 x 4 = 8
D. 4 + 4 = 8 ik its times i want to make sure before i put it