The working cycle of a four－stroke diesel engine consists of four events: （1) compression; （2) expansion; （3) exhaust; （4) suctionThe correct sequence is _____.

A.(4)-(2)-(3)-(1)

B.(4)-(3)-(1)-(2)

C.(4)-(3)-(2)-(1)

D.(4)-(1)-(2)-(3)

请帮忙给出正确答案和分析，谢谢！