A company has three production sections S1, S2, and S3. Which contribute 40%, 35% and 25% respectively to total output. The following percentages to faulty units have been observed: S1 = 2%, S2 = 3%, and S3 = 4%. There is a final check before output is dispatched.Calculate the probability that a unit found faulty at this check has come from Section 2 (S2).