65. According to advertisements, the higher a suntan lotion’s sun protection factor, or SPE, the more protection from sunburn. In order for a suntan lotion to work, however, one has to remember to put it on before going in the sun, put on an adequate amount to cover the skin, and reapply it as needed. Therefore, it really does not matter what SPE a suntan lotion has.
Which one of the following best identifies the error in reasoning made in the passage?
(A) It is unreasonable to assume that the only purpose of a suntan lotion is to provide protection from sunburn.
(B) Because some people get sunburned more easily than other, the fact that there are different SPEs cannot be ignored.
(C) It cannot be concluded that the SPEs is not important just because there are requirements for the application of the suntan lotion.
(D) It is unreasonable to assume that all suntan lotions required the same application procedures in order to work effectively.
(E) There is no reason to assume that manufacturers are unaware that people sometimes forget to apply suntan lotion before going in the sun.
Anybody can explain why the best key is C instead of B?Thanks. | 
