Rachel works for a domestic cleaning agency, Busy Bee's Cleaning. She realises that, just before the holiday season, demand for their cleaning services picks up. To capitalise on this increase in demand, Rachel arranges for more part-time cleaners during these high-peak seasons. Which type of capacity plan is Rachel using? Select one: a. A level-capacity plan b. A chase-demand plan c. A demand-management plan d. A combination management plan