Which of the following parabolas opens upward and appears narrower than y = -3x2 + 2x - 1?

A parabola opens upward when its x² coefficient is positive. It is narrower than y = -3x² + 2x - 1 when the absolute value of its x² coefficient is greater than 3; y = 4x² - 2x - 1 has coefficient 4, so it meets both conditions.

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