Given below are two statements :
Statement-$I$ : Each primary oocyte gets surrounded by a layer of granulosa cells and is called a primary follicle.
Statement-$II$ : At puberty,only $60,000-80,000$ primary follicles are left in each ovary.
In the light of the 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 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