What fraction do the blue segments make up?

The picture in the attached figure

we know that

Total fraction of blue segments=fraction of blue segments circle 1+
fraction of blue segments circle 2  

step 1
find the fraction of blue segments circle 1
total segments=8
blue segments=4
fraction of blue segments=4/8

step 2
find the fraction of blue segments circle 2
total segments=8
blue segments=3
fraction of blue segments=3/8

step 3
Total fraction of blue segments=4/8+3/8----> 7/8

the answer is 7/8   

The correct answer is c