For the reaction : `A(g)+B(g)hArr C(g)+D(g)`, two moles of each A and B were taken into a flask which of following relation between the concentration terms is true when the system attains equilibrium

Options

A. [A]=[B]
B. [A]`lt`[B]
C. [B]=[C]
D. [A]`gt`[B]

Answer

B