Kelvin Was Glad He Created a Business Plan for His

Kelvin was glad he created a business plan for his painting business.He was able to ensure all the important items were covered such purchasing brushes and ladders,printing and mailing brochures,and negotiating a line a credit at the bank.In what capacity was Kelvin's plan useful to him?

A) as a schedule
B) as a checklist
C) as a proposal
D) as a review