The amount of simple interest accrued on a sum of money varies jointly with the amount of money, the interest rate, and the time the money is invested. a sum of money is invested at 4% for 3 years and accrues $168 in interest. the same sum of money is invested in a second account at 6% for 4 years. which statement is true?

which is the answer?

a )the amount of interest accrued on the second account is less than double the amount of interest accrued on the first account.

b )the amount of interest accrued on the second account is double the amount of interest accrued on the first account.

c ) the amount of interest accrued on the second account is more than double but less than triple the interest on the first account.

d ) the amount of interest accrued on the second account is more than triple the interest accrued on the first account.