Vision Problems: Alice is farsighted and cannot see objects clearly that are closer to her eye than 80.0 cm. What is the refractive power of the contact lenses that will enable her to comfortably see objects at a distance of 25.0 cm from her eyes?
A. +2.75 diopters
B. -2.75 diopters
C. -4.72 diopters
D. +4.72 diopters
E. +7.00 diopters
Answer: A
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