The figure given below depicts a diagrammatic sectional view of the ovary. Which one set of three parts out of $I-VI$ are correctly identified?

• A
  $VI$ - Primary follicle; $III$ - Graafian follicle; $V$ - Corpus luteum
• B
  $II$ - Secondary follicle; $III$ - Tertiary follicle; $IV$ - Ovulation
• C
  $I$ - Primary follicle; $II$ - Tertiary follicle; $V$ - Corpus luteum
• D
  $I$ - Primary follicle; $II$ - Corpus luteum; $V$ - Graafian follicle