We Are Most Concerned with Gap Five, Because It Is

We are most concerned with gap five, because it is the proximate cause of all other gaps. Gap five is:

A) Gap between perceived service and actual service
B) Gap between service delivered and service promised
C) Gap between services expected by the customer and management's perceptions of customers' expectations
D) Gap between management's perceptions of customer expectations and service quality expectations
E) Gap between service quality specifications and service delivery