Given below are two statements :

Statement $I:$Cleistogamous flowers are invariably autogamous

Statement $II:$Cleistogamy is disadvantageous as there is no chance for cross pollination.

In the light of the above statements, choose the correct answer from the options given below :

• A

  Both Statement $I$ and Statement $II$ are incorrect

• B

  Statement $I$ is correct but Statement $II$ is incorrect

• C

  Statement $I$ is incorrect but Statement $II$ is correct

• D

  Both Statement $I$ and Statement $II$ are correct