Which one of the following is a valid user requirement for Gamma Airlines website?

Which one of the following is a valid user requirement for Gamma Airlines website?
A . Most users who frequently book flights on Gamma Airlines website must be satisfied with the website
B. Gamma Airlines website must be effective, efficient and satisfactory to use
C. Users must be able to book a flight within a reasonable time
D. If a user books a flight that costs more than £2,000, the website must send a confirmation code to the user’s mobile phone; the reservation must not be accepted before the user has entered the correct confirmation code on the website
E. Gamma Airlines website must be at least as efficient as the websites of the two most important competitors, Alpha Airlines and Beta Airlines
F. Users must be able to select the payment methods they used for previous reservations

Answer: F

Explanation:

A requirement for use that provides the basis for design and evaluation of an interactive system to meet identified user needs.

Notes: