Estimate 25.65 + 13.23 + 6.35 by rounding each number to the nearest tenth.

a. 26 + 13 + 6 = 45

b. 25.7 + 13.2 + 6.4 = 45.3

c. 25.6 + 13.2 + 6.3 = 45.1

d. 25.7 + 13.3 + 6.4 = 45.4