1/4 - 0.5 + 1/2 - 0.25 + 3/5 + 0.4

You are asked to find the sum by using fractions. Which expression could you use?

A: 1/4 - 0.5 + 1/2 - 0.25 + 3/5 + 0.4

B: 1/4 - 1/2 + 1/2 - 1/4 + 3/5 + 2/5

C: 1/4 - 1/4 + 1/2 - 1/4 + 3/5 + 2/5

B: 1/4 - 1/2 + 1/2 - 1/4 + 3/5 + 2/5