Please answer the below multiple choice question. This is for a Business Law course.

Which of the following statements most likely would not be considered a counteroffer?

a. "I accept, but only if you also include a CD player."

b. "I accept, but please ship the merchandise to my home rather than my place of business."

c. "I accept, but only if you give me thirty days to pay."

d. "I accept, but only if you give me a discount."