______on ten years of observation and study, Professor Wang announces that everyone dreams every night, whether they realize it or not.

A．Basing

B．Based

C．Been based

D．Having based

小王有2分和5分的硬币若干枚，其中2分的面值比5分的面值少26分，2分的硬币比5分的硬币多8枚．小王有2分的硬币和5分的硬币各多少枚？