Select the pair that consists of viral diseases. A. Mumps and small pox B. Herpes and influenza C. Pneumonia and syphilis D. Both a and b

Options

A. Mumps and small pox
B. Herpes and influenza
C. Pneumonia and syphilis
D. Both a and b

Explanation

To solve the question of selecting the pair that consists of viral diseases, we will analyze each option step by step.

### Step 1: Analyze Option A
- **Option A: Mumps and Smallpox**
- Mumps is caused by the paramyxovirus.
- Smallpox is caused by the variola virus.
- **Conclusion**: Both diseases in this option are viral diseases.

### Step 2: Analyze Option B
- **Option B: Herpes and Influenza**
- Herpes is caused by the herpes simplex virus.
- Influenza is caused by the influenza virus.
- **Conclusion**: Both diseases in this option are also viral diseases.

### Step 3: Analyze Option C
- **Option C: Pneumonia and Syphilis**
- Pneumonia can be caused by various bacteria (e.g., Streptococcus pneumoniae).
- Syphilis is caused by the bacterium Treponema pallidum.
- **Conclusion**: Both diseases in this option are bacterial diseases, not viral.

### Step 4: Analyze Option D
- **Option D: Both A and B**
- Since both options A and B consist of viral diseases, this option suggests that both pairs are correct.
- **Conclusion**: This option is valid as both pairs contain viral diseases.

### Final Conclusion
- The correct answer is **Option D: Both A and B**, as both pairs consist of viral diseases.

---