Match the following
| List-I (Operations Research in India) | List-II (Year) |
| a. Introduction | 1. 1964 |
| b. Operation Unit setup | 2. 1949 |
| c. O.R. Society of India | 3. 1953 |
| d. OPSEARCH | 4. 1957 |
A. a-1, b-3, c-2, d-4
B. a-2, b-3, c-4, d-1
C. a-1, b-2, c-3, d-4
D. a-1, b-4, c-3, d-2
Answer: Option B

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