If Emf of the Ideal Battery Is $V = 4.0 \mathrm {~V}$

Multiple Choice

If emf of the ideal battery is $V = 4.0 \mathrm {~V}$ , what is the current through $R _ { 6 }$ for the circuit shown in the figure?

A) $0.017 \mathrm {~A}$
B) $4.0 \mathrm {~A}$
C) $0.040 \mathrm {~A}$
D) $0.0077 \mathrm {~A}$