乳酸基塑料是以土豆等副食品废料为原料，经多步处理而制成，是一种新型的可降解塑料，下列有关乳酸基塑料说法错误的是(  )

A．乳酸基塑料属于金属材料

B．制取乳酸基塑料的原料比较低廉且来源广

C．使用乳酸基塑料制品可以减少“白色污染”

D．乳酸基塑料属于有机高分子材料

He wrote a long moving poem _________ Qian Xuesen who is known as “ Father of Chinese Rocketry.”

A．in place of

B．in favor of

C．in memory of

D．in support of