Graph the function f(x) = 5(0.21)x. (15 pts)

A.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 21
B.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 5
C.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 18
D.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 8