Under the influence of gravity ggg, which of the following expressions represents the terminal speed of the rising balloon?
(B−Mgc)2/3\left(\frac{B - Mg}{c}\right)^{2/3}(cB−Mg)2/3
(B−Mgc)3/2\left(\frac{B - Mg}{c}\right)^{3/2}(cB−Mg)3/2
(Mg−Bc)2/3\left(\frac{Mg - B}{c}\right)^{2/3}(cMg−B)2/3
B−Mgc\sqrt{\frac{B - Mg}{c}}cB−Mg
