50. Which of the following groups of people are microhotels most suitable for?
(A) Young people who want to travel on a limited budget
(B) Parents with young children who like big playgrounds
(C) Old people who like to take long hot spring baths
(D) Bird watchers who like to be surrounded by nature

受日本膠囊旅館的啟發，微型旅館最近受到了...