Sample Transactions:[table] Transaction ID | Items Purchased T1 | Coffee, Milk, Bread T2 | Coffee, Eggs, Milk T3 | Coffee, Bread T4 | Milk, Bread T5 | Eggs, Bread T6 | Coffee, Bread T7 | Coffee, Milk T8 | Coffee, Eggs T9 | Milk, Eggs T10 | Bread, Eggs [/table]Using the transactions above, what is the confidence of the {Coffee}⇒{Milk} association rule?单项选择题

A

40%

B

50%

C

60%

D

70%

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