Because of a slowdown in business, Sarah has voluntarily changed her status from full time to part time. Before the change, she and her spouse were covered under her company group health insurance plan. Which of the following statements regarding COBRA is CORRECT?

A$.$ COBRA rules allow continuation of coverage in this situation for up to $36$ months.

B$.$ COBRA rules allow continuation of coverage in this situation for up to $18$ months.

C$.$ Because her change is voluntary, COBRA rules do not apply.

D$.$ COBRA rules allow continuation of coverage in this situation for up to $29$ months.