Read the passage below and answer the following question.
Passage
It is important to have good credit in the world todayMany large purchases are made by borrowing money and paying it back over a set period of timeSeveral factors should be considered before making a purchaseIs this item a need or a want? Is the item important enough to pay the interest necessary to borrow money? Banks and credit cards charge interest on the money you borrow from themInterest is based on an Annual Percentage Rate (APR)There are different types of credit that are usedThe three most common are installment loans, credit cards, and lines of creditOnce you have credit cards, you need to protect yourself from theft and fraudYou should keep track of your credit cards by making a list of themWrite down account numbers, addresses, and contact phone numbers for each card and store the list in a safe placeIf a card is lost or stolen, this information will be vital for contacting the issuer of the card.

Which of the following is not a typical form of credit?
a. Installment loans
b. Credit cards
c. Mortgages
d. Lines of credit