Jeremy and his wife Juliet own only one car, a Fiat. When their daughter Maxine left home to attend a college on the other side of the country, Jeremy rented a car to take Maxine and all her stuff. The rental agreement included unlimited mileage anywhere in the United States. Juliet remained at home and continued to drive their Fiat as usual. On the way back, Jeremy stopped to visit some friends. By the time he returned the rental car, he had been gone two weeks, and he had driven $3,500$ accident$-$free miles. How, if at all, is this rental exposure likely to affect the premium on his personal auto policy?

a$.$ A rental car endorsement will be added to his policy at renewal, and there is a premium associated with the endorsement.

b$.$ It will have no effect on Jeremy's renewal premium, but it will affect the premium on his current policy which is subject to audit.

c$.$ Jeremy's premium is not affected.

d$.$ Jeremy's renewal premium will be higher based on his annual miles driven under the expiring policy.