Which of the Following Is Correct About Wire Transfer of Funds

Which of the following is correct about wire transfer of funds, given that wire transfer saves three days, the annual interest rate is 6 percent, and the cost of wire transfer is $20?

A) Wire transfers should be preferred for amounts exceeding $2,400
B) Depository transfer cheques should be preferred for amounts under $121,667
C) Wire transfers should be preferred for amounts exceeding $40,576
D) Depository transfers should be preferred for amounts exceeding $121,667 Daily interest rate x number of days saved x size of transfer = $20
) 06/365 x 3 x size of transfer = $20