The average number of candy chocolates in a bag from Company X is 144, and the data follows a normal distribution curve. The standard deviation is two candy chocolates. The average number of candy chocolates in a bag from Company Y is 142, and the data follows a normal distribution curve. The standard deviation for Company Y is four candy chocolates. Which of the following is true?
a. 50% of the bags of candy chocolates from both companies contain less than 142 candy chocolates.
b. One standard deviation above and below the mean of the bags of candy chocolates from Company X is between 142 and 146 candy chocolates, while only one standard deviation above the mean of the bags of candy chocolates from Company Y is between 142 and 146 candy chocolates.
c. Three standard deviations from the mean of the bags of candy chocolates from Company X is between 130 and 154 candy chocolates.
d. Two standard deviations from the mean of the bags of candy chocolates from Company Y contain between 140 and 148 candy chocolates.