Let the quotes of A and B be \(7x\) and \(4x\)
According to the question,
\(=\frac{4x-1}{4x}=\frac{3}{4}\)
\(=4x-1=3x\) (or) \(x=1\) Lakh
Amount decreased by A in price to win the bid is given by,
\(=7x-(4x-1)\)
\(=3x+1=4\) Lakh
Hence, option B is the correct answer.The correct option is (B): Rs.4 lakhs