Variance Analysis is an important tool used in the Control Costs Process. Which of the following statements regarding variances is correct?
A. The percentage range of acceptable variances will tend to increase as more work is accomplished
B. The percentage range of acceptable variances will tend to decrease as more work is accomplished
C. The percentage range of acceptable variances is high at the start of a project, tends to decrease in the middle of a project, and then tends to increase as the project nears completion
D. The percentage range of acceptable variances is a constant all through the project