问题详情

Vitamins, and minerals such as iron, calcium, are another group of essential nutrients, though the body does not need ______ it does the macronutrients.

A．as great a quantity of these as

B．as a great quantity of these as

C．as great a quantity of these than

D．so a great quantity of these as

请帮忙给出正确答案和分析，谢谢！