关于排卵型功血，下列说法错误的是()

A．BBT双相型

B．BBT不典型双相

C．BBT单相

D．BBT高温相缩短

E．BBT高温相延长

Please come and help me with this application from because I don’t know how to        it.

A．set about

B．set out

C．set up

D．set aside