P: Entrepreneur: Students can achieve significant savings by purchasing their textbooks used rather than new. My new website, which sells used textbooks, has become a profitable business in only 2 years.
(A): (If something is a profitable business, it provides a product or service that is valued by some people.)
C1: The entrepreneur's website is not without value to certain individuals.
C2: The entrepreneur's website provides students with a valuable product or service.
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Originally, I thought the answer was C1; but, I ended up choosing C2. Why is C2 wrong?
It states that the website provides value. Or is "valuable" being used incorrectly in C2 from its meaning in the premise?
Also, what makes C1 great?
Thanks.