Three Bulbs,two of Which Contain Different Gases and One of Which

Multiple Choice

Three bulbs,two of which contain different gases and one of which is empty,are connected as shown in drawing (a) .Which drawing (b) - (d) best represents the system after the stopcocks are opened and the system is allowed to come to equilibrium?

A) drawing (b)
B) drawing (c)
C) drawing (d)