1) Given an alphabet = {a, b} and a language L consisting of all strings of length 3 that begin with a, which of the following is the set of all strings in L?

	{a, aa, ab, aaa, aab, aba, abb}
	{aaa, aab, aba, abb}
	{a, aa, ab}
	{a, aa, ab, aaa, abb}