While a list often follows a colon, a colon should not follow the verb 'were' directly. It should be 'The rules were as follows: ...' or just 'The rules are...'. Given the options, the colon here is acceptable if an implied 'the following' exists, but technically 'The rules were as follows:' is superior. However, within simple MCQ constraints, the colon introduces the list.
While a list often follows a colon, a colon should not follow the verb 'were' directly. It should be 'The rules were as follows: …' or just 'The rules are…'. Given the options, the colon here is acceptable if an implied 'the following' exists, but technically 'The rules were as follows:' is superior. However, within simple MCQ constraints, the colon introduces the list.
