A is a rational number, then the following statement is correct: A is a positive number B - a C A and - a must have a negative number d a and - a represent a pair of opposite numbers

A is a rational number, then the following statement is correct: A is a positive number B - a C A and - a must have a negative number d a and - a represent a pair of opposite numbers

Choose D A and - A to represent a pair of opposite numbers