—Which sport are you in at the school sports meeting?

—No decision yet. I think it              after discussing with my PE teacher, Mr Yuan.[ ]

A. will be decided

B. will decide

C. was decided

D. is decided

保证合同要以书面形式订立，以明确双方当事人的权利、义务。我国《担保法》规定，书面保证合同必须在主合同之外单独订立。