Here Is Market Basket Data for 1,000 Transactions at a Drug

Multiple Choice

Here is Market Basket data for 1,000 transactions at a Drug Store.All transactions involve 1 or 2 drugs.Use the table below to answer the following questions.

-Refer to the table above.What is the confidence of Drug B being purchased given that Drug A has been purchased?

A) .200
B) .250
C) .333
D) .400