It can be inferred from the third paragraph that______.A．ergonomics is nothing but an illu

It can be inferred from the third paragraph that______.

A．ergonomics is nothing but an illusion

B．the philosophy of ergonomics is not practiced faithfully

C．the rowing machine is carefully designed into a desirable shape

D．the writer likes assembling parts of a rowing machine

请帮忙给出正确答案和分析，谢谢！