Question 1208142
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Both of your answers are correct.


It might help to highlight the items of interest.
A = { <font color=red>x, y, z</font> }
B = { w, <font color=red>x, y, z</font> }
which helps confirm that A is indeed a subset of B.
Anything inside set A is also in set B (but not vice versa).


Also,
A = { <font color=red>1, 2, 3</font> }
B = { 0, <font color=red>1, 2, 3</font>, 4, 5 }
which is another scenario when A is a subset of B.


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Let's look at another example
A = {1,2,3}
B = {1,2,4,5,6}
Highlight everything in set A. Mark those items in set B (if they exist).
A = {<font color=red>1,2,3</font>}
B = {<font color=red>1,2</font>,4,5,6}
Unfortunately the element "3" is not found in set B, so set A isn't a subset of B.
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