An existing goal tracks the number of cases resolved per month. You need to enable it to show the number of cases that are still open.
What should you do?
A. Create a new goal, and add it as a child to the existing goal.
B. Create a new goal metric, and add it to the existing goal.
C. Add a new rollup field to the existing goal metric.
D. Add a rollup query to the existing goal.
