The Government wants to put an amount now into an account that earns 5% per quarter to cover the expenses of a bridge that equals 42745 every quarter for 100 years. There is one single payment at the 5th quarter that equals to 20000. What is the amount that should be paid now by the government to cover these expenses?

Select one:

a. 24220

b. 870571

c. 4290170.52

d. 101161