Tristan and Juliet, a Newly Married Couple Who Intend to Go

Tristan and Juliet, a newly married couple who intend to go to Egypt for their honeymoon, bought a Europe travel package on Jizo Inc., an online travel site. As they have never seen Europe or used the services of Jizo before, they were largely dependent on other customers' feedback and signals for service quality. Which of the following characteristics of service is highlighted in this instance?

A) service intangibility
B) service inseparability
C) service variability
D) service perishability
E) service distinction