Final answer:
The sets in tabulation method are {a, b, c, d, e}, {0, 1, 2, 3}, and {a, e, i, o, u}.
Step-by-step explanation:
In tabulation method:
A) The set of five alphabets is {a, b, c, d, e}.
B) The set of non-negative integers less than 4 is {0, 1, 2, 3}.
C) The set of vowels in the English alphabet is {a, e, i, o, u}.