The alternatives shown are to be compared on the basis of their present worth values. At an interest rate of 8% per year, the values of n that you should use in the uniform series factors to make a correct comparison by the present worth method are: Alternative(A) Alternative (B) First Cost -10,000 -25,000 M&O cost/year 3,000 10,000 6,000 Salvage value -2,000 Life 3 5 O A. None of the above O B. n =5 years for A and n =5 years for B C. n = 5 years for A and n =3 years for B O D. n = 15 years for A and n =15 years for B