Which of the Following Is a Major Difference Between a Pure

Which of the following is a major difference between a pure credit swap and a default option?

A) In a pure credit swap the premium payment on the swap is paid up front, while the fees of a default option are paid over the life of the default option.
B) In a pure credit swap the premium payments on the swap are paid over the life of the swap, while the fee of a default option is paid up front.
C) In a pure credit swap the premium payment on the swap is paid at maturity, while the fees of a default option are paid over the life of the default option.
D) In a pure credit swap the premium payments on the swap are paid over the life of the swap, while the fee of a default option is paid at maturity.