This is an example of a technical question that asks you about two elements of the programming language you use and requests that you state a preference for one or the other. In most cases, your preference is neutral, as long as you can defend why you chose the particular item. However, if the interviewer or the organization has a strong preference for one of the items, it would be best if your stated preference matched theirs. The exception to this rule is if your preference would improve their operations, and you're able to explain this in detail.
