Its B , cause its the build up of magnetic energy that is suddenly released ,causing what we see and call a solar flare and it looks like a bright light coming out of the representation
Well to find this out you need to make an equation
s+7=j So for example if Johnny's sister is 15 then Johnny would be 22 because s(sister's age) +7(number of years difference between their ages)=22(Johnny's age)