A certain cheese manufacturer makes "White Parrot 8 oz. wedges" of cheddar cheese. The nature of the manufacturing process is such that the actual weights of "White Parrot 8 oz. wedges" vary, specifically according to the Normal distribution with mean 8.1 ounces and standard deviation 0.1 ounces. A plan is made to select Simple Random Samples of 5 cheese wedges and calculate the sample mean x̄. The sampling distribution of x̄ is a) roughly Normal with mean 8.1 and standard deviation 0.045. b) 8 oz and 0.1 oz, and .1/2.24 c) perfectly Normal, but with an unknown mean. d) 8.1 and 0.1 and n = 5