单项选择题

A.空腹全血血糖≥6.1毫摩尔/升
B.空腹血浆血糖≥6.7毫摩尔/升
C.空腹全血血糖≥6.7毫摩尔/升
D.空腹血浆血糖≥6.9毫摩尔/升