38. An object of density ρ and volume V is suspended from a spring scale and completely submerged in a liquid of density ρL (ρ ＞ ρL). If the container is placed in an elevator accelerating vertically upward with an acceleration a, what is the reading on the spring scale? (A) V(ρ - ρL)(g + a) (B) V(ρ - ρL)g + Vρa (C) V(ρ + ρL)(g + a) (D) V(ρ - ρL)(g - a)