Answer:
The correct answer is option B.
Step-by-step explanation:
Gibbs free energy is a measure of an energy which can be converted it work.It s calculated by the expression :

ΔG = Change in free energy
ΔS = Change in entropy
T = Temperature of the system
As we know that ,Gibbs free energy is the form of energy and energy is measured in joules or kilo-joules.