Read statement A-D `:- `
(A) When some one drinks lot of water, ADH release is decreased.
(B) Exposure to cold temperature suppress ADH release
(C ) Caffeine in Tea and coffee increase sodium absorption from DCT and collecting ducts
(D) ADH also cause vasodilation
Which statements are correct?
(a) A and C
(b) A and B
(c) C and D
(d) B and D

Options

A. A and C
B. A and B
C. C and D
D. B and D

Answer

To solve the question, we need to evaluate each statement (A-D) regarding the Anti-Diuretic Hormone (ADH) and determine which ones are correct.

### Step-by-Step Solution:

1. **Evaluate Statement A**:
- **Statement**: "When someone drinks a lot of water, ADH release is decreased."
- **Analysis**: This statement is correct. When there is an excess of water in the body, the secretion of ADH decreases to prevent further water retention, allowing the body to excrete more dilute urine.

2. **Evaluate Statement B**:
- **Statement**: "Exposure to cold temperature suppresses ADH release."
- **Analysis**: This statement is also correct. Cold temperatures can lead to a decrease in ADH release, which can affect water balance in the body.

3. **Evaluate Statement C**:
- **Statement**: "Caffeine in tea and coffee increases sodium absorption from DCT and collecting ducts."
- **Analysis**: This statement is incorrect. Caffeine is known to have a diuretic effect, which can lead to increased urine production rather than increased sodium absorption. It does not enhance sodium reabsorption in the distal convoluted tubule (DCT) or collecting ducts.

4. **Evaluate Statement D**:
- **Statement**: "ADH also causes vasodilation."
- **Analysis**: This statement is incorrect. ADH primarily causes vasoconstriction to increase blood pressure and does not cause vasodilation. Vasodilation is typically associated with Atrial Natriuretic Factor (ANF).

### Conclusion:
- The correct statements are A and B. Therefore, the correct option is **(b) A and B**.