From the given standard electrode potentials 

$$\text{Sn}^{4+}(aq) + 2e^- \to \text{Sn}^{2+}(aq)$$ $$E^0 = 0.15\ \text{V}$$ and $$\text{Br}_2(l) + 2e^- \to 2\text{Br}^-(aq)$$ with $$E^0 = 1.07\ \text{V}$$, the approximate free energy change for the process $$2\text{Br}^-(aq) + \text{Sn}^{4+}(aq) \to \text{Br}_2(l) + \text{Sn}^{2+}(aq)$$ is

A

177.6 kJ

B

355 kJ

C

$$-177.6\ \text{kJ}$$

D

$$-355\ \text{kJ}$$