The police were seeking more information to find out _____ the rich merchant.[ ]

A. who was it that killed

B. who it was that killed

C. it was who killed

D. who was it killed

甲公司为国有独资公司，乙公司为甲公司独资举办的子公司，1996年，甲公司出资70%、乙公司出资30%，投资创办丙有限责任公司，甲公司总经理王某兼任该公司的董事长。请根据这些情况和下列名题中设定的条件回答问题：( )。

设王某代表丙公司做出一项投资决策，结果导致丙公司损失50余万元，该损失应由谁承担( )。

A．由甲公司承担70%，乙公司承担30%

B．由甲公司全部承担

C．由王某个人承担

D．由丙公司承担