Educational Psychologists Suggest That a Child's Intellectual Capacity, I, Can

Multiple Choice

Educational psychologists suggest that a child's intellectual capacity, I, can be represented as a function of time, t, in months, as follows:
,Where a > 0, b > 0 are constants. What is the effect on the graph of I of decreasing the value of b?

A) The graph gets closer to the asymptote more quickly.
B) The asymptote moves to the left.
C) The asymptote moves down.
D) The graph gets closer to the asymptote less quickly.