Factor a3 - 3 + 3a2 - a.

A) (a - 1)(a + 1)(a + 3)
B) (a 2 + 1)(a - 3)
C) (a 2 - 3)(a + 1)

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Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?