Read this excerpt from a college entrance essay: What conclusion does the writer make in this paragraph?

I started a small landscaping business last summer so I could help pay for my hockey uniform and the program fees. Landscaping is hard work, especially on hot summer days. But I enjoyed being outside and I liked earning some extra money. By the end of the summer, I doubled the number of my clients, and I paid for new skates. So through this small venture, I glimpsed the rewards that come with being an entrepreneur.

A. Mowing lawns can be hard work, but it's worth the money earned.
B. The experience helped the writer learn the benefits of starting a business.
C. The writer was able to double his or her client base through hard work.