**Core Concept**
The medulla of the ovary contains cells that are homologous to the interstitial cells of the testes, which are involved in the production of androgens. This homology is an example of the shared embryological origin of the male and female reproductive systems.

**Why the Correct Answer is Right**
The cells in the medulla of the ovary are actually the androgen-producing cells, which are the homologous equivalent of Leydig's cells in the testes. These cells are responsible for producing androgens, such as androstenedione and testosterone, which play a crucial role in the development of female secondary sexual characteristics. The production of androgens by these cells in the ovary is a unique feature that distinguishes it from the testes.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the cells present in the medulla of the ovary.
**Option B:** This option is incorrect because it is a type of cell found in the ovary, but not the one that is homologous to the interstitial cells of the testes.
**Option C:** This option is incorrect because it is a type of cell found in the testes, but not the one that is homologous to the cells present in the medulla of the ovary.

**Clinical Pearl / High-Yield Fact**
The production of androgens by the cells in the medulla of the ovary is a critical factor in the development of female secondary sexual characteristics, such as pubic and axillary hair growth.

**Correct Answer:** C. Theca cells are not the correct answer, however, the cells in the medulla of the ovary are actually the stromal cells which are androgen producing and homologous to Leydig's cells in the testes.