Which shows a correct order to solve this story problem?

The Diva Clothing Factory used 149.4 yards of fabric in 3 days. It used the same amount of fabric each day.

The Chic Clothing Factory used 166.8 yards of fabric in 3 days. It used the same amount of fabric each day.

How much fabric did the two factories use altogether in one day?

A.
Step 1: Calculate how much fabric the Diva Clothing Factory used in a day.
Step 2: Calculate how much fabric the Chic Clothing Factory used in a day.
Step 3: Multiply the two amounts by 3.

B.
Step 1: Calculate how much fabric the Diva Clothing Factory used in a day.
Step 2: Calculate how much fabric the Chic Clothing Factory used in a day.
Step 3: Divide the two amounts by 3.

C.
Step 1: Calculate how much fabric the Diva Clothing Factory used in a day.
Step 2: Calculate how much fabric the Chic Clothing Factory used in a day.
Step 3: Add the two amounts.

D.
Step 1: Calculate how much fabric the Diva Clothing Factory used in a day.
Step 2: Calculate how much fabric the Chic Clothing Factory used in a day.
Step 3: Add the two amounts.
Step 4: Multiply the sum by 2.