you need eye drops for your dry eyes, you only brought a few dollars with you. which is the best method of choosing the right eye drops to buy for your soft contact lenses

A: compare brands first, but purchase the one that has lots of commercial advertisements

B: Compare prices first, but purchase your mothers favorite, even though its for hard lenses

C: Compare the ingredients and purchase the brand that is safe to use with soft contact lenses

D: Compare the prices and purchase the most inexpensive brand