The duration of audio content on audio CDs is found to follow a normal distribution, with a mean of 82.1 minutes and a standard deviation of 6.5 minutes. If the company distributes 5.5 million CDs in one year, what is the approximate number of CDs that have content lasting less than 70 minutes? A) 0.17 million
B) 0.45 million
C) I.7 million
D) 2.3 million