单项选择题

A.corr({A},{B})=support({A})*support({B})
B.corr({A},{B})=support({A})*support({B})/support({A∩B})
C.corr({A},{B})=support({A∩B})/(support({A})*support({B}))
D.corr({A},{B})=support({A∩B})