The number of members of an online community increases each month. the function m(t) = n(1 + r)^t represents the number of members at month t, where n is the initial number of members and r is the rate of increase. select the correct statement.

a. the value of m is a product of n and a factor that does not depend on n.

b. n increases each month.

c. the function is linear.

d. the initial value is (1 + r).