Treatment of cancer is

Options

A. surgery
B. radiation
C. chemotherapy
D. all

Answer

### Step-by-Step Solution for the Treatment of Cancer

1. **Understanding Cancer Treatment Options**: Cancer treatment can involve multiple approaches depending on the type and stage of cancer. The main treatment options include surgery, radiation therapy, and chemotherapy.

2. **Surgery**:
- Surgery is often the first line of treatment for many types of cancer.
- It involves the physical removal of the tumor and surrounding tissue.
- Surgery can also be used for diagnostic purposes to confirm the presence of cancer.

3. **Radiation Therapy**:
- Radiation therapy uses high-energy waves or particles to target and destroy cancer cells.
- This treatment can be used alone or in conjunction with surgery and chemotherapy.
- It is particularly effective for localized tumors.

4. **Chemotherapy**:
- Chemotherapy involves the use of drugs to kill cancer cells or stop their growth.
- It can be administered orally or intravenously and is often used for cancers that have spread throughout the body.
- Chemotherapy can also be used in conjunction with surgery and radiation.

5. **Conclusion**:
- Each of these treatments can be used alone or in combination, depending on the specific case of cancer.
- Therefore, the correct answer to the question "Treatment of cancer is" would be "all of the above" as all mentioned options (surgery, radiation, and chemotherapy) are valid treatments for cancer.