Please solve clearly, for statistical quality control class

3. Willys-Overland sourced pistons for its CJ-2A engines from multiple suppliers with the following percentage of pistons supplied by each of the vendors: Vendor A B C D Percentage 30 Supplied 25 30 15 In a random sample of 10 pistons, four were found to be nonconforming. It is known from previous experience that the vendors have the following nonconformance rate: Vendor A B C D Scrap rate (%) 5 10 5 10 What is the probability that the sample came from vendor A, vendor B, or vendor C? (3 points) Probability Answer A B C