The speed (v) of sound in a gas is given by v = k Pˣ ρʸ Where K is dimensionless constant, P is pressure, and ρ is the density, then

(a) x = ½, y = ½

(b) x = –½, y = –½

(c) x = ½, y = –½

(d) x = –½, y = ½