Boris has an income of $100 per month. Initially the price of food is

$1 per bag, the price of prune juice is $2 per bottle, and Boris buys no

prune juice. Then the California prune growers launch a slick advertising

campaign convincing Boris that prune juice is very hip, so he starts buying

10 bottles per month. Boris's income, the price of food, and the price of

prune juice have all remained the same. Show graphically why and how

Boris has changed his consumption bundle.