Answer:
Explanation:
Given
Required
Which of the sets is a subset
A set (Set A) is a said to be a subset of another set (Set B) if the content of that set (i.e. A) can be found in the other set (set B)
Using the above definition, we have:
A is a subset of U because 2 and 4 are in U
A is not a subset of U because 1,3,5 and 7 are not in U
A is not a subset of U because 1,3,5 and 7 are in U
Hence, option A answers the question.