An uncatalyzed reaction has a rate of 4.2 x 10-7 sec-1. When an enzyme is added the rate is 3.2 x 104 sec-1. Calculate the rate enhancement caused by the enzyme.
a. the data are not appropriate for the calculation requested
b. 7.4 x 10-3
c. 3.2 x 104
d. 1.34 x 10-2
e. 7.62 x 1010