If (P = sqrt{QRleft(1+frac{3t}{R}right)}), make R the subject of the formula.

A.
(R = frac{3Qt}{P^2 – Q}) 
B.
(R = frac{P^2 – 3t}{Q+1}) 
C.
(R = frac{P^2 + 3t}{Q – 1}) 
D.
(R = frac{P^23Qt}{Q})
If (P = sqrt{QRleft(1+frac{3t}{R}right)}), make R the subject of the formula.