Terrible Tees Is an Online T-Shirt Company That Invites Consumers

Terrible Tees is an online t-shirt company that invites consumers to enter their t-shirt designs in a monthly contest. All visitors to the site are invited to vote on their favorite design, and at the end of the month, the company produces and takes orders for the t-shirt design with the most votes. This is an example of ________.

A) the wisdom of crowds
B) the production concept
C) the selling orientation
D) a folksonomy
E) a brandfest