Which of the following would be considered a service in...
单项选择题Which of the following would be considered a service industry? (i) an airline company (ii) a railway company (iii) a firm of accountants
A、(i) and (ii) only
B、(i) and (iii) only
C、(ii) and (iii) only
D、(i), (ii) and (iii)
