In the extraction of chlorine from brine ............

a. $∆{\mathrm{G}}^{⊝}$ for the overall reaction is negative.

b. $∆{\mathrm{G}}^{⊝}$ for the overall reaction is positive.

c. ${\mathrm{E}}^{⊝}$ for the overall reaction has a negative value.

d. ${\mathrm{E}}^{⊝}$ for the overall reaction has a positive value.

Choose the correct option

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)