Which answer shows a correct order to solve this story problem?

Maurine had to pay $2.52 tax on her purchases. She bought 3 books for $12.99 each, 2 pens for $0.69 each, and a magazine for $2.99. How much did Maureen spend?

A.
Step 1: Add the price of a book and a pen.
Step 2: Multiply by 3 and then by 2.
Step 3: Add $2.99 to that result.
Step 4: Add the tax to the total of the purchases.

B.
Step 1: Calculate the total price of the 2 pens.
Step 2: Add $2.99 to that total.
Step 3: Calculate the total price of the 3 books.
Step 4: Add the tax to the price of the 3 books

C.
Step 1: Calculate the total price of the 3 books.
Step 2: Calculate the total price of the 2 pens.
Step 3: Add $2.99 to the total of the cost of the books and pens.
Step 4: Add the tax to the total of the purchases.

D.
Step 1: Add $2.99 to the amount of the tax.
Step 2: Calculate the total price of the 2 pens.
Step 3: Calculate the total price of the 3 books.
Step 4: Add the prices of the pens to the price of the books.