In March of 1998 a Company Purchased a Piece of Equipment

In March of 1998 a company purchased a piece of equipment for $50 000. The corporate tax rate was and still is 30% and the after-tax MARR is 10%. What CTF should the company use if the present worth of the first cost of this equipment, taking into account all future tax savings due to the CCA, is $37 727?

A) 0.7018
B) 0.7213
C) 0.7425
D) 0.7545
E) cannot be determined