That's it ??

1 and -1 ??

Did you really evaluate upfront the question ??

The answer will be changed if we take x = 4 and y = -8
Ok It looked so easy that i didnt test other values

Let's test some possible values of x and y

case i: Since $x>0>y$, one possible pair of values is $x=1$ and $y=-1$
We get:
Quantity A: $x-y = 1 - (-1) = 2$
Quantity B: $(x+y)^2=(1+(-1))^2 = 0^2 = 0$
In this case, Quantity A is greater

case ii: Since $x>0>y$, another possible pair of values is $x=5$ and $y=-1$
We get:
Quantity A: $x-y = 5 - (-1) = 6$
Quantity B: $(x+y)^2=(5+(-1))^2 = 4^2 = 16$
In this case, Quantity B is greater

Answer: D

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Testing with x = -1 and y = 1 --> we get A = 2 and Qty B = 0 --> Ans A
with y = -2, and x = 5 we get Qty A = 7 and Qty B = 9. which is B

Thus ans is D.

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