A step function h(x) is represented by y = –2⌊x⌋. Which phrase best describes the range of the function h(x)?

The floor function ⌊x⌋ is always an integer. As x varies over the real numbers, ⌊x⌋ can be any integer, and multiplying any integer by −2 produces an even integer. This includes zero and both positive and negative even integers, so the range is all even integers.

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