Match the items of List I with those of List II.
| List-I | List-II |
| a. $$\overline X $$ Chart | 1. Sampling risks measurement |
| b. C Chart | 2. Potential capability measurement |
| c. OC Curve | 3. Variable measurement |
| d. 6σ Chart | 4. Attribute measurement |
A. a-3, b-1, c-4, d-2
B. a-3, b-4, c-1, d-2
C. a-4, b-3, c-1, d-2
D. a-4, b-2, c-3, d-1
Answer: Option B

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