An acceptance sampling procedure is being developed to check whether batteries have the required voltage. The batteries are shipped in very large batches, and the voltages of a random sample of n = 50 batteries are to be measured. What value of C should be used if it is decided that the producer's risk should be no larger than 2.5% for an acceptable quality limit of p0 = 0.06? In this case, what is the consumer's risk if the proportion of defective batteries is p1 = 0.30?