Statement $I :$ When a $Si$ sample is doped with Boron,it becomes $P$-type and when doped by Arsenic it becomes $N$-type semiconductor such that $P$-type has excess holes and $N$-type has excess electrons.
Statement $II$ : When such $P$-type and $N$-type semiconductors are fused to make a junction,a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements,choose the most appropriate answer from the options given below.

• A
  Both Statement $I$ and Statement $II$ are incorrect
• B
  Statement $I$ is incorrect but Statement $II$ is correct
• C
  Both Statement $I$ and Statement $II$ are correct
• D
  Statement $I$ is correct but Statement $II$ is incorrect