Step 1: Recall the first hybrid varieties.
- Maize → Ganga-1 (IV)
- Jowar → CSH-1 (I)
- Bajra → HB-1 (III)
- Cotton → H-4 (II)
Step 2: Construct the correct matching.
\[
\begin{aligned}
(A) &\rightarrow (IV) \text{Maize - Ganga-1}
(B) &\rightarrow (I) \text{Jowar - CSH-1}
(C) &\rightarrow (III) \text{Bajra - HB-1}
(D) &\rightarrow (II) \text{Cotton - H-4}
\end{aligned}
\]
Step 3: Verify against the options.
This matches Option 2 exactly.
Final Answer: \[ \boxed{\text{The correct answer is 2. (A) - (IV), (B) - (I), (C) - (III), (D) - (II)}} \]