The nurse is assessing a client with possible Cushing’s syndrome. In a client with Cushing’s syndrome, the nurse would expect to find

A. hypotension.
B. thick, coarse skin.
C. deposits of adipose tissue in the trunk and dorsocervical area.
D. weight gain in arms and legs.

已知数列{a_n}满足：a1+3a2+…+(2n-1)an=(2n-3)•2n+1，数列{bn}的前n项和Sn=2n2+n-2．求数列{an•bn}的前n项和Wn．