Which of the Following Distinguishes an Apprenticeship from an Internship

Which of the following distinguishes an apprenticeship from an internship?

A) An apprenticeship is an on-the-job training method,whereas an internship is a classroom-based training method.
B) An apprenticeship is an unstructured training method,whereas an internship is a structured training method.
C) An apprenticeship is sponsored by employee unions,whereas an internship is sponsored by educational institutions.
D) Most apprenticeship programs take place in white-collar professions,whereas most internship programs occur in blue-collar jobs.
E) An apprenticeship does not provide an income,whereas an internship provides an income while learning a trade.