Assertion: Cancer cells shows uncontrolled growth.
Reason: Cancer cells losses property of contact inhibition.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Cancer cells show uncontrolled growth." This is a true statement. Cancer cells do not follow the normal regulatory mechanisms that control cell division, leading to their rapid and unregulated proliferation.

2. **Understanding the Reason**: The reason provided is that "Cancer cells lose the property of contact inhibition." This is also a true statement. In normal cells, contact inhibition is a process that prevents cells from dividing when they come into contact with each other. However, cancer cells lose this ability, allowing them to continue dividing even when they are in close proximity to other cells.

3. **Connecting Assertion and Reason**: The reason explains why the assertion is true. The loss of contact inhibition in cancer cells directly contributes to their uncontrolled growth. Therefore, the reason supports the assertion.

4. **Conclusion**: Both the assertion and the reason are true, and the reason is the correct explanation for the assertion.

5. **Final Answer**: The correct option is that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

---