Which function represents the exponential graph given that (0, 1) and (4, 81/16) are points that lie on the graph?
A ƒ(x) = (23)xƒ(x) = ( 2/3 ) x
B ƒ(x) = (4)xƒ(x) = ( 4 ) x
C ƒ(x) = (1)xƒ(x) = ( 1 ) x
D ƒ(x) = (3/2)x