The Customer Service Department of Universal Instruments, Manufacturer of the Galaxy

The customer service department of Universal Instruments, manufacturer of the Galaxy home computer, conducted a survey among customers who had returned their purchase registration cards. Purchasers of its deluxe model home computer were asked to report the length of time (t) in days before service was required. Describe a sample space corresponding to this survey.

A) {t | t > 0}
B) {t | 0 < t ≤ 370}
C) {t | 100 ≤ t ≤ 370}
D) {t | 0 < t ≤ 100}