Assertion : Taenia solium & Fasciola belong to Platyhelminthes.
Reason : Platyhelminthes are coelomates

Options

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

Answer

To solve the question, we need to evaluate both the assertion and the reason provided.

### Step-by-step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Taenia solium and Fasciola belong to Platyhelminthes."
- Taenia solium is commonly known as the pork tapeworm, and Fasciola is known as the liver fluke. Both of these organisms are indeed classified under the phylum Platyhelminthes, which is known for flatworms.

**Conclusion**: The assertion is **true**.

2. **Understanding the Reason**:
- The reason states that "Platyhelminthes are coelomates."
- Coelomates are organisms that possess a true coelom, which is a fluid-filled body cavity completely lined by mesoderm. However, members of the phylum Platyhelminthes are actually acoelomates, meaning they lack a true coelom. Instead, they have a solid body without any body cavity.

**Conclusion**: The reason is **false**.

3. **Final Evaluation**:
- Since the assertion is true and the reason is false, we conclude that the correct option is: "Assertion is true, but reason is false."