Determine Which Property of Absolute Value Justifies the Statement $$| - x | = | x |$$

Multiple Choice

Determine which property of absolute value justifies the statement.
- $$| - x | = | x |$$

A) Property 5: the triangle inequality
B) Property 1: the opposite of a number is equal to the absolute value of the number .
C) Property 2: the absolute value of a number and its opposite are equal.
D) Property 2: the opposite of the absolute value of a number is equal to the absolute value of the number.