In October 2018, Canada became the 2^nd country in the world to legalize recreational cannabis use for adults. According to a report by BBC, the annual consumer use will account for between $4.2 and $8.7 billion Canadian dollars in sales. These sales will be to between 3.4 and 6 million people.

The BBC further reported that Canadians had spent $1,200(Canadian dollars) per person annually in 2017 on medical and clack-market recreational marijuana. State the relative difference in the answer to part a, if the $1,200 per person is the referenced amount.