I’m a bit confused about the differences between checking for empty strings and NULL. I thought both A and B could be valid, but I’m not entirely confident.
I remember practicing a similar question where we had to check for null values. Option C seems like it could be right, but I feel like it might not cover all cases.
I think Option C might be the right answer here. It seems to cover all the requirements, like accepting only customer prefixes and setting the local-preference.
Kanisha
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