I think it should be B
This is how I came at soultion:
Lets in 1997 the rent was R
Then in 1998 the rent was R*(100+X)/100 (Since increase was for X%)
And in 1999 the rent was R*(100+X)/100 - R*Y*(100+X)/100 (Since decrease was for Y)
Simplifying the rent in 1999 gives (R/100)*(100 + X - 100Y - YX)
So we have to find wether Rent in 1999 than 1997
=> ((R/100)*(100 + X - 100Y - YX))/R > 1
or, (100 + X - 100Y - YX)/100 > 1
or, X - 100Y - YX > 0 ------------------ (i)
Now coming to Stmt I:
X > Y
Looking at 1 and X > Y we cant conclude anything.
Now taking Stmt II:
XY/100 < X - Y
or, XY < 100 (X-Y)
Lets suppose XY = 99(X - Y)
(i) becomes X - 100Y - 99(X-Y) > 0
=> X - 100Y - 99X + 99Y > 0
=> -98X - Y > 0
=> 98X + Y < 0
Which can never be possible since X and Y are both positive value .
So we can say (2) is sufficient..
Anybody please correct me if I am wrong
