Question: In which of the following situations is using a subquery suitable? a. When you need to find all customers living in a particular region of

In which of the following situations is using a subquery suitable?
a. When you need to find all customers living in a particular region of the country
b. When you need to find all publishers who have toll-free telephone numbers
c. When you need to find the titles of all books shipped on the same date as an order placed by a particular customer
d. When you need to find all books published by Publisher 4

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