After taking a sample we say we are 88% confident that the population mean is between 106 and 122. What do we mean?(a) the probability is .88 that the population mean lies between 106 and 122(b) the probability is that the population mean is 114(c) 88% of the confidence intervals calculated from sample of this size will contain the population mean(d) (a) and (c) but not (b)