$ Amoeba is a type of sporozoan.
! Sporozonas have two contractile vacules.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the question, we will analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Amoeba is a type of sporozoan."
- **Analysis**: Amoeba is not a sporozoan; it is classified as a protozoan, specifically an amoeboid organism. Therefore, this assertion is incorrect.

2. **Understanding the Reason**:
- The reason states that "Sporozoans have two contractile vacuoles."
- **Analysis**: Sporozoans, such as Plasmodium (the causative agent of malaria), do not possess contractile vacuoles. In fact, sporozoans typically lack these structures altogether. Hence, this reason is also incorrect.

3. **Conclusion**:
- Since both the assertion and the reason are incorrect, we can conclude that neither statement is true.

4. **Identifying the Correct Option**:
- Based on the analysis, we can evaluate the options:
- Option A: Both assertion and reason are correct, and the reason is the correct explanation of the assertion. (Incorrect)
- Option B: Both assertion and reason are correct, but the reason is not the correct explanation of the assertion. (Incorrect)
- Option C: Assertion is correct, and reason is wrong. (Incorrect)
- Option D: Both assertion and reason are wrong. (Correct)

Thus, the correct answer is **Option D**: Both assertion and reason are wrong.