5. Using the Books database from the lesson, which of the following determines the number of books whose price is at least $20?

a. Dim intNum As Integer =

Aggregate book In BooksDataSet.tblBooks Where book.Price > 20 Into Count()

b. Dim intNum As Integer =

Aggregate book In BooksDataSet.tblBooks Where book.Price >= 20 Into Sum()

c. Dim intNum As Integer =

Aggregate book In BooksDataSet.tblBooks Where book.Price >= 20 Select book

d. Dim intNum As Integer =

Aggregate book In BooksDataSet.tblBooks Where book.Price >= 20 Into Count()