A researcher determines that the time T (in minutes) spent on hold by a customer waiting for a "customer care specialist" and the rating R given by the customer in a satisfaction survey can be modeled by the regression equation

Which of the following statements about the value of r in this scenario are correct?

The value of r is negative and would be unchanged if time was measured in hours instead of minutes.

The value of r is positive and would be unchanged if time was measured in hours instead of minutes.

The value of r is negative and would change if time was measured in hours instead of minutes.

The value of r is positive and would change if time was measured in hours instead of minutes.