make U the subject of the formula S = (sqrt{frac{6}{u} – frac{w}{2}})

A.
u = (frac{12}{2s^2}) 
B.
u = (frac{12}{2s+ w}) 
C.
u = (frac{12}{2s^2 + w}) 
D.
u = (frac{12}{2s^2}) + w
Correct Answer: Option C
Explanation
S = (sqrt{frac{6}{u} – frac{w}{2}})
S = (frac{12 – uw}{2u})
2us^{2} = 12 – uw
u(2s^{2} + w) = 12
u = (frac{12}{2s^2 + w})