“How do you deal with the disagreement between the company and the customers?” “The key ______ the problem is to meet the demand ______ by the customers.”

A．to solving, making

B．to solving, made

C．to solve, making

D．to solve, made

下列选项中对维生素A的生理功能叙述不正确的选项是（）。

A、可降低胆固醇和毛细血管的脆性

B、维护上皮细胞组织的健康

C、参与视紫质的合成，维持正常视觉

D、促进体内组织蛋白的合成，加速生长发育