Carcinoma is cancer of

Options

A. Lymphocytes
B. Erythrocytes
C. Ectoderm and endoderm/Epithelial tissue
D. White blood corpuscles

Answer

**Step-by-Step Solution:**

1. **Understanding Carcinoma**: Begin by defining what carcinoma is. Carcinoma is a type of cancer that originates in epithelial tissue, which is the tissue that lines the surfaces and cavities of organs in the body.

2. **Identifying Epithelial Tissue**: Epithelial tissue can be derived from two of the three primary germ layers: ectoderm and endoderm. This means that carcinoma can arise from tissues that develop from these layers.

3. **Recognizing the Types of Cells Involved**: Carcinoma specifically refers to cancer that develops from epithelial cells. These cells can undergo uncontrolled division, leading to the formation of tumors.

4. **Analyzing the Options**: Now, evaluate the given options:
- **Option A (Lymphocytes)**: Lymphocytes are a type of white blood cell involved in the immune response. They are not related to carcinoma.
- **Option B (Erythrocytes)**: Erythrocytes are red blood cells. Carcinoma does not apply to these cells either.
- **Option C (Epithelial Tissue)**: This option correctly identifies carcinoma as cancer of epithelial tissue, which aligns with our definition.
- **Option D (White Blood Corpuscles)**: This refers to white blood cells in general, and carcinoma does not apply to them.

5. **Conclusion**: Based on the analysis, the correct answer is option C, which states that carcinoma is cancer of epithelial tissue.