Explanation:$setDifference returns a set with elements that appear in the first set but not in the second set. 8. $setIsSubset	returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.
A. Null
B. True
C. False
D. None of the mentioned
Answer:A
Explanation:$setDifference returns a set with elements that appear in the first set but not in the second set. 8. $setIsSubset	returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.
A. Null B. True C. False D. None of the mentioned
Explanation:$setIsSubset accepts exactly two argument expressions.