Amy plans to open a laundromat with a gym. She got the idea from the laundromat with a bar and game rooms, which she visits regularly. She wants to test her idea by starting out in a small space with the focus on the laundromat and a small space allocated for gym equipments. Amy's idea is an example of _____.
A. a blue ocean strategy
B. a pure innovation
C. an altruistic approach
D. an incremental innovation
Answer: D