[A]: Typhoid carriers may be cured by remov- ing their spleen.
[R]: Typhoid bacteria remain concentrated in it

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion Statement**: The assertion states that "Typhoid carriers may be cured by removing their spleen." We need to evaluate whether this statement is true or false.

2. **Evaluating the Role of the Spleen**: The spleen is an organ involved in filtering blood and is part of the immune system. However, typhoid fever is primarily associated with the bacteria Salmonella typhi, which is not concentrated in the spleen.

3. **Understanding the Reason Statement**: The reason states that "Typhoid bacteria remain concentrated in it (the spleen)." We need to assess whether this is accurate.

4. **Evaluating the Concentration of Typhoid Bacteria**: In reality, the typhoid bacteria are primarily found in the gallbladder and can also reside in the intestinal tract, not the spleen. Therefore, this statement is also false.

5. **Conclusion**: Since both the assertion and the reason are incorrect, we conclude that both statements are false.

**Final Answer**: Both the assertion and reason are false.

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