请选择DCBA8B/e+?'V;@8z4h*m9{1]I can’t ___________ the maths problem within an hour. It’s very difficult.1`/v9}+~
A. take out1`/v9}+~
B. work out1`/v9}+~
C. put out1`/v9}+~
D. look out1`/v9}+~