— I thought you wouldn't mind.

— Well, ________, I don't; but you should have asked me first. [ ]

A. as a whole  

B. by the way

C. no matter  

D. as a matter of fact

以资本升值（即未来价格上升带来的价差收益）为目标，投资者往往愿意通过延迟获得基本收益来求得未来收益的增长，这种投资者会很少购买分红的普通股，其投资风险较大的是何种投资组合？