16) Suppose that the price of a can of tuna is $2 each.

16) Suppose that the price of a can of tuna is $2 each. Emma is willing to pay $4 for the first can, Max is willing to pay $3 for the second can, Charlie is willing to pay $2 for the third can, and Joe is willing to pay $1 for the fourth can. In equilibrium, what is the total consumer surplus from the consumption of tuna?