If x - y = 8, then which of the following must be true?
1. Both x and y must be positive for any value of x and y.
2. If x is positive, y must be negative for any value of x and y.
3. If x is negative, y must be positive for any value of x and y.
Select the correct answer using the code given below.
A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2 nor 3
Correct Answer: Option D
Explanation
We will use the 'Counter-Example Method' which is a standard UPSC pattern seen in 2014 and 2016 [19, 37]. The qu