Sara has a gift card for Six Town's Bakery and bought the following items.

6 muffins for $0.45 each
2 boxes of cookies for $2.70 each
1 coffee cake for $3.72
Sara estimates she has $8.00 left on her gift card. What assumption did Sara use to make her estimate?

A.
The gift card started with $7.00.

B.
The gift card started with $12.00.

C.
The gift card started with $15.00.

D.
The gift card started with $20.00.

The assumption that Sara used to make her estimate is that the gift card started with $12.00 (option B).