Explanation:

- Let's examine the initial series: 1, 226, 482, 771, 1095, 1456.

- The numbers increase progressively, though not consistently linear, which suggests a pattern or formula governs their progression.

- Start by examining the differences between consecutive numbers:

- 226 - 1 = 225

- 482 - 226 = 256

- 771 - 482 = 289

- 1095 - 771 = 324

- 1456 - 1095 = 361

- Notice these differences: 225, 256, 289, 324, 361, are perfect squares of consecutive integers: 15², 16², 17², 18², 19².

- The task suggests starting with a given number and applying this pattern: 12, then A, B, C, D, E.

- Start with 12:

- 12 + 15² = 237, so A = 237

- 237 + 16² = 493, so B = 493

- 493 + 17² = 782, so C = 782

- 782 + 18² = 1106, so D = 1106

- 1106 + 19² = 1467, so E = 1467

- Therefore, option 3, 1467, is correct.

Option:3 - 1467

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