John di silvestre obtained a loan to buy a cello for $8,400. he pays 12% exact interest on the loan for 146 days. what is the amount of interest owed and the maturity value of the loan? a) $1,680.00 interest; $10,080.00 maturity value b) $1,008.00 interest; $9,408.00 maturity value c) $3,360.00 interest; $11,360.00 maturity value d) $403.20 interest; $8,803.20 maturity value