When flying from northeast to southwest on stable warm front, th

When flying from northeast to southwest on stable warm front, the A/C will pass cloud in the sequence of __________ .

A.Ci-Cs-As-Ns

B.Cs-As-Ci-Ns

C.Ci-Cc-Ac-Ns

D.Ns-As-Cs-Ci

正确答案是A