Match List I and II and select the correct answer with the help of the codes given below the lists
`{:("List I","List II"),("A. Somatotropin","1. Neurophypophysis"),("B. Oxytocin","2. Cretinism"),("C. Thyroxine","3. Rickets"),("D. Vitamin D","4. Gigantism"):}`

Options

A. A = 3, B = 1, C = 4, D = 2
B. A = 4, B = 1, C = 2, D = 3
C. A = 2, B = 3, C = 4, D = 1
D. A = 1, B = 4, C = 3, D = 2

Answer

To solve the matching question, we need to identify the correct relationships between the hormones/vitamins in List I and their associated conditions in List II. Let's go through each item step by step.

### Step 1: Analyze Somatotropin
- **Somatotropin** is also known as growth hormone.
- An excess of somatotropin can lead to **Gigantism**.
- Therefore, we can match:
- **A. Somatotropin → 4. Gigantism**

### Step 2: Analyze Oxytocin
- **Oxytocin** is a hormone produced by the hypothalamus and released by the neurohypophysis (posterior pituitary).
- It is not directly linked to any specific disease in the options, but it is associated with the neurohypophysis.
- Therefore, we can match:
- **B. Oxytocin → 1. Neurohypophysis**

### Step 3: Analyze Thyroxine
- **Thyroxine** is a thyroid hormone.
- A deficiency in thyroxine can lead to **Cretinism**, which is characterized by stunted growth and developmental issues.
- Therefore, we can match:
- **C. Thyroxine → 2. Cretinism**

### Step 4: Analyze Vitamin D
- **Vitamin D** is essential for calcium absorption and bone health.
- A deficiency of vitamin D can lead to **Rickets**, a condition that causes softening and weakening of bones in children.
- Therefore, we can match:
- **D. Vitamin D → 3. Rickets**

### Final Matches
Now, we can summarize our matches:
- A → 4 (Somatotropin → Gigantism)
- B → 1 (Oxytocin → Neurohypophysis)
- C → 2 (Thyroxine → Cretinism)
- D → 3 (Vitamin D → Rickets)

### Conclusion
The correct matching is:
- A - 4
- B - 1
- C - 2
- D - 3

Thus, the answer is **Option 2** (4, 1, 2, 3).