A family plants two trees.

Tree A is 2 feet tall and grows 16 inches per year.
Tree B is 4 feet tall and grows 8 inches per year.
Which equation represents the year, x, when the height of the trees are the same?

A
2x+43=4x+23

B
43x+2=23x+4

C
2x+16=4x+8

D
16x+2=8x+4