单选题 Which of the following is least accurate? An interest rate collar is:
A. a combination of a long cap and a short floor.
B. a combination of a short cap and a long floor.
C. a combination of a long cap and a long floor.

【正确答案】 C
【答案解析】[解析] 利率领是由一组利率顶和利率底组成，或者是由一组利率顶的多头和利率底的空头组成，抑或是由一组利率顶的空头和利率底的多头组成。