Match the columns and choose the options
`{:(,,"Column-I",,"Column-II"),(,(i), "Ileo-caecal valve",(a),"Between stomach and duodenum"),(,(ii), "Pyloric sphincter",(b),"Between ileum and caeum"),(,(iii), "Gastro-oesophageal",(c),"Hepato-pancreatic duct"),(,(iv), "Sphincter of oddi",(d),"Between oesophagus and stomach "):}`

Options

A. i-b,ii-d,iii-a,iv-c
B. i-b,ii-a,iii-d,iv-c
C. i-c,ii-a,iii-d,iv-b
D. i-d,ii-b,iii-c,iv-a

Answer

To solve the matching question, we will analyze each item in Column-I and match it with the correct item in Column-II based on their definitions and locations.

### Step-by-Step Solution:

1. **Identify the First Item: Ileo-caecal valve**
- The ileo-caecal valve is located between the ileum (the last part of the small intestine) and the caecum (the first part of the large intestine).
- **Match:** (i) Ileo-caecal valve → (b) Between ileum and caecum.

2. **Identify the Second Item: Pyloric sphincter**
- The pyloric sphincter is a muscular structure that regulates the flow of food from the stomach to the duodenum (the first part of the small intestine).
- **Match:** (ii) Pyloric sphincter → (a) Between stomach and duodenum.

3. **Identify the Third Item: Gastro-oesophageal sphincter**
- The gastro-oesophageal sphincter is located between the esophagus and the stomach, regulating the flow of food into the stomach.
- **Match:** (iii) Gastro-oesophageal → (d) Between oesophagus and stomach.

4. **Identify the Fourth Item: Sphincter of Oddi**
- The sphincter of Oddi controls the flow of digestive juices (bile and pancreatic juice) from the hepatopancreatic duct into the duodenum.
- **Match:** (iv) Sphincter of Oddi → (c) Hepato-pancreatic duct.

### Final Matches:
- (i) Ileo-caecal valve → (b) Between ileum and caecum
- (ii) Pyloric sphincter → (a) Between stomach and duodenum
- (iii) Gastro-oesophageal → (d) Between oesophagus and stomach
- (iv) Sphincter of Oddi → (c) Hepato-pancreatic duct

### Conclusion:
The correct matches are:
- (i) → (b)
- (ii) → (a)
- (iii) → (d)
- (iv) → (c)

### Answer Option:
The correct answer is **Option B**.