As far as you are concerned, Melbourne is one of the most popular tourist attraction cities in the world because（）

A. Melbourne is the most liveable city in the world
B. Melbourne is famous for its food and culture
C. There are seven world-renowned public universities here such as The University of Melbourne, Monash University, RMIT University, La Trobe University, Deakin University, Victoria University and Swinburne University of Technology
D. All of Above