A company has a policy "investigate all variances exceeding $3,000 or 15% of the budgeted cost." There is a variance of $2,000 in repair and maintenance costs of $12,000. What does the company do in the given situation?

a. It should be ignored as it is less than $3,000.

b. It should be investigated as all variances are equally important.

c. It deserves more attention as it is more than 15% of total repair cost.

d. It should be considered an in-control occurrence.