Margo is the owner of a food truck that specializes in traditional Italian cuisine. Having entered the food truck business only three months ago, Margo has noticed that there are two other food trucks in the city also specializing in Italian cuisine. Margo would like to target price-sensitive customers, stimulate trial of her products, and encourage consumers to purchase from her food truck instead of her competitors. Which type of promotion best addresses Margo's objectives?
1. specialty advertising
2. premiums
3. contest