contestada

In the equation below assume U and A are know.
Rearrange the equation so that you would solve for R in terms of the Greek letter sigma)
U = R − 1 2 A σ 2
A. R = U − 1 2 A σ 2
B. R = 1 2 A σ 2 U
C. R = U 1 2 A σ 2