2. Consider the class LA of all regular languages that contain only words of a length that is a multiple of 4 , over the fixed three-letter alphabet A={a,b.c}. (a) Is LA countable? (b) Is the class MA countable where MA consists of all languages over A that are not in LA ? (c) Is the class LAMA countable? For each question, you must give a precise argument substantiating your