On Sundays there were a lot of children playing in the park, ____  parents seated together joking.

A．whose

B．their

C．which

D．where

营运资金周转是指企业的营运资金从现金投入生产经营开始到最终转化为现金为止的过程。下列会使营业周转期增大的方式有( )。

A．缩短存货周转期

B．缩短应收账款周转期

C．缩短应付账款周转期

D．延长应收账款周转期