An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is $S_{1}$ and that of the other part is $S_{2}$. Given that $S_{1} > S_{2}$. If the piston is removed,then the total entropy of the system will be:
- A$S_{1} \times S_{2}$
- B$S_{1} - S_{2}$
- C$\frac{S_{1}}{S_{2}}$
- D$S_{1} + S_{2}$
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