问题如下：
By implementing risk-based pricing on its mortgage products, a bank will likely charge a:
选项： A. higher interest rate to a customer
with a higher FICO score.
B. lower interest rate to a customer
with a lower credit bureau score.
C. higher interest rate to a customer
with a higher probability of default.
D. lower interest rate to a customer
positioned on a lower relative score band.
解释：
C The more likely it is that a customer will default, the higher the interest rate the bank will charge. A customer with a higher (lower) FICO/credit bureau score will be offered a lower (higher) interest rate. A customer positioned on a lower relative score band will be offered a higher interest rate.
请问第四问是什么意思，怎么解释？
