单项选择题

可引起手足搐搦的血钙数值是

A.1.4mmol/L(5.5mg/dl)
B.1.5mmoL/L(6mg/dl)
C.1.6mmol/L(6.5mg/dl)
D.1.75~1.88mmol/L(7~7.5mg/(dl)
E.2mmol/L(8mg/dl)
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