Which of the following drugs is used in cancer treatment?

The drugs identified in the correct choice, which include 5-FU (5-fluorouracil), mercaptopurine, and tamoxifen, are recognized for their role in cancer treatment.

5-FU is a chemotherapeutic agent primarily used in the treatment of various solid tumors, particularly colorectal cancer. It works by inhibiting DNA synthesis in cancer cells, preventing them from dividing and growing.

Mercaptopurine, also a chemotherapy medication, is utilized in the treatment of acute lymphoblastic leukemia and other certain types of cancer. It operates as an antimetabolite that disrupts the synthesis of nucleic acids needed for cancer cell replication.

Tamoxifen is classified as a selective estrogen receptor modulator (SERM) and is commonly prescribed for hormone receptor-positive breast cancer. It prevents estrogen from binding to the receptors on breast cells, effectively slowing or stopping cancer cell growth.

In contrast, the other choices include drugs that are not indicated for cancer treatment. Ciprofloxacin is an antibiotic used mainly to treat bacterial infections, metoprolol is a beta-blocker used for hypertension and heart-related issues, and aspirin is an anti-inflammatory medication primarily used for pain relief and cardiovascular protection. These drugs do not have a