The breaker's manufacturing company makes 80% of a particular sensor, the cartin company makes 15% of them, and the flutes company makes the other 5%. the sensors made by breaker's have a 4% defect rate, the cartin sensors have a 6% defect rate, and the flutes sensors have a 9% defect rate. if a sensor is randomly selected from the general population of all sensors, what is the probability that it is defective, given that it was made by breaker’s? a: 0.04 b: 0.05 c: 0.15 d: 0.80