If y = cos²x + sec²x, where 0 ≤ x < π/2, then which one of the following is correct?

1. A.0.5 ≤ y < 1
2. B.1 ≤ y < 2
3. C.y ≥ 2✓ Correct
4. D.0 < y < 0.5

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