In a $P-N$ junction,which of the following statements is correct regarding the potential?
- AThe potential in the $N$-region is higher than the potential in the $P$-region.
- BThe potential in the $P$-region is higher than the potential in the $N$-region.
- CThe potential of both the $P$-region and the $N$-region is the same.
- DNothing can be said.
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