Suppose that the company that owns all of the vending machines on your campus has doubled the price of a can of soda, but they still sell almost the same number of sodas per day because:
A. students do not have good nutritional information
B. there are few other places to purchase soda on campus
C. soda purchases represent a large fraction of students' budgetS
D. price elasticity of demand for soda is almost unitary
PLEASE PROVIDE AN EXPLANATION WHERE POSSIBLE