—Bob, it's getting cold. ______ take a jacket with you?

—All right, Daddy.[ ]

A. Why not

B. What about

C. Would you like

D. You'd better

市场营销战略的特征包括( )。

A．稳定性和适应性

B．竞争性和风险性

C．指导性和长远性

D．多变性和创新性