In measuring the sides of a rectangle, one side is taken 5% in excess and the other 4% in deficit. Find the error percent in the area, calculate from the those measurements.
Choose the correct choice from the following choices:
A) 0.9 %
B) 0.8 %
C) 0.3 %
D) 0.2 %
E) 0.5 %

Rationale: "explanation : let x and y be the sides of the rectangle then correct area = = error % = answer : b ) 0.8 %"
Answer: B