Jake bought a dog bed. The top of the bed is a perfect circle. The diameter of the bed is 4 feet. He wants to make a circle blanket that will cover the top of the dog bed. How much fabric does he need to make the blanket? Round your final answer to the nearest hundredth.

a.12.56 ft squared
b.50.24 ft squared
c.25.12 ft squared
d.6.28 ft squared