All the books donated by the students from urban schools are said ______ to the students in rural areas the other day.

A．to be sent

B．being sent

C．having been sent

D．to have been sent

基金的认购费和申购费可以在基金份额发售或申购时收取，但费率不得超过认购和申购金额的（）。

A．1%

B．3%

C．5%

D．10%