_____, the great mother, in order to save her sick child, kept waiting for four hours in the heavy snow.

A．It depends

B．Take it easy

C．Believe it or not

D．It is OK

2岁的患儿，头颅大，前额突出，前囟门大，肋骨呈串珠状，血清钙2.0mmol/L，血清磷1.1mmol/L，碱性磷酸酶明显升高，智力一般。该患儿最可能为()

A．佝偻病

B．散发性呆小病

C．地方性呆小病

D．脑积水

E．软骨营养障碍