Why do interest rates on loans tend to be higher in a strong economy than in a weak one?a.Credit markets increase in a strong economy, and with increased demand come increased prices.b.A strong economy encourages borrowers to take out very long-term loans, which have higher interest rates.c.Credit is plentiful in a strong economy, so it is harder to build up the good credit rating necessary for a low interest rate.d.People in a strong economy have more money, so they can afford more expensive loans.