You have saved $6,000 toward the purchase of a car costing $13,000. How long will the $6,000 have to be invested at 6% compounded monthly to grow to $13,000? Identify the formula required to solve this problem. A. A = P(1 + i)n, where i = , and A is the amount at the end of n periods, P is the principal value, r is the annual nominal rate, m is number of compounding periods per year, i is rate per compounding period, and n is total number of compounding periods m OB. A=P(1 + rt), where A is the amount, P is the principal, r is the annual simple interest rate, and t is the time in years O C. I= Prt, where I is the interest, P is the principal, r is the annual simple interest rate, and t is the time in years OD. A= Pet, where A is the amount at the end of t years if P is the principal invested at an annual rate r compounded continuously It will take months for the investment to grow to $13,000. (Round up to the nearest integer.)