If \(A = x\)% of \(y\) and \(B = y\)% of \(x\), then which of the following is true?
Answer: D
\(x\)% of \(y\) \(= (\frac{x}{100} \times y) = (\frac{y}{100} \times x) = y\)% of \(x\)
\(\therefore A = B\)