Match column `I` with column `II` and select the correct option from the codes given below.
`{:(,"Column I",,"Column II"),("A.","RBC","(i)","Coagulation"),("B.","Antibody","(ii)","Immunity"),("C.","Platelets","(iii)","Contraction"),("D.","Systole","(iv)","Gas transpot"),(,,"(v)","Hypertension"):}`

Options

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

Answer

To solve the matching question, we will analyze each item in Column I and find the corresponding function in Column II step by step.

### Step-by-Step Solution:

1. **Identify RBC (Red Blood Cells)**:
- RBCs are primarily responsible for the transport of gases in the bloodstream, specifically oxygen and carbon dioxide.
- **Match**: RBC (A) → Gas transport (iv)

2. **Identify Antibody**:
- Antibodies are proteins produced by the immune system to help fight off foreign invaders, thus providing immunity.
- **Match**: Antibody (B) → Immunity (ii)

3. **Identify Platelets**:
- Platelets, also known as thrombocytes, play a crucial role in blood clotting (coagulation) during injuries.
- **Match**: Platelets (C) → Coagulation (i)

4. **Identify Systole**:
- Systole refers to the contraction phase of the heart, specifically the contraction of the ventricles.
- **Match**: Systole (D) → Contraction (iii)

### Final Matches:
- A → iv (Gas transport)
- B → ii (Immunity)
- C → i (Coagulation)
- D → iii (Contraction)

### Summary of Matches:
- A (RBC) → iv (Gas transport)
- B (Antibody) → ii (Immunity)
- C (Platelets) → i (Coagulation)
- D (Systole) → iii (Contraction)

### Correct Option:
Based on the matches, the correct option is:
- A4, B2, C1, D3