In a manufacturing plant, three machines A,B, and C produce 40 %, 35 %, and 25 %, respectively, of the total production. The company's quality control department determined that 1% of the items produced by machine A, 1.5% of the items produced by machine B, and 2% of the items produced by machine Care defective. If an item is selected at random and found to be defective, what is the probability that it was produced by machine B