Select the true statements.
I. Cancer can be detected by the use of antibodies against cancer -specific antigens for certain type of cancer. II. The tumour cells are surgically removed to reduce the load of cancerous cells. III. Certain chemotherapeutic drugs are used to kill the cancerous cells, but majority of the drugs have side affects like hair loss, anaemia, etc.

Options

A. I and II
B. I and III
C. II and III
D. I, II and III

Answer

To determine which statements about cancer are true, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Evaluate Statement I**:
- The statement claims that cancer can be detected using antibodies against cancer-specific antigens for certain types of cancer.
- **Analysis**: This is indeed true. Certain cancers produce specific antigens that can be targeted by antibodies, which can help in the detection of these cancers.
- **Conclusion**: Statement I is true.

2. **Evaluate Statement II**:
- The statement mentions that tumor cells are surgically removed to reduce the load of cancerous cells.
- **Analysis**: This is also true. Surgical removal of tumors is a common practice to eliminate cancerous cells and reduce the tumor burden in the body.
- **Conclusion**: Statement II is true.

3. **Evaluate Statement III**:
- The statement states that certain chemotherapeutic drugs are used to kill cancerous cells, but many of these drugs have side effects such as hair loss and anemia.
- **Analysis**: This statement is accurate. Chemotherapy is a standard treatment for cancer, and it is well-known that many chemotherapeutic agents can cause side effects, including hair loss and anemia, due to their impact on rapidly dividing cells in the body.
- **Conclusion**: Statement III is true.

### Final Conclusion:
All three statements (I, II, and III) are true. Therefore, the correct answer is that all statements are true.