Match the following items in List-I with most suitable options in List-II:
| List-I | List-II |
| a. Fisher | 1. Inverse probability |
| b. Karl Pearson | 2. Normal Distribution |
| c. Thomas Bayes | 3. Correlation Coefficient |
| d. Karl Gauss | 4. Index Numbers |
A. a-4, b-3, c-2, d-1
B. a-4, b-3, c-1, d-2
C. a-4, b-2, c-3, d-1
D. a-4, b-2, c-1, d-3
Answer: Option B

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