Answer: The right answer is the C) Both A and B.
Explanation: Just to elaborate a little on the answer, it can be added that both tapas and raciones refer to portions of food that are usually and traditionally served with a drink at taverns and restaurants in Spain. Whereas a tapa is a small portion of food, a ración is a bigger portion, but they both allow you to taste a wide variety of dishes, from paella to Spanish omelette, and many others. Often tapas are served for free if you buy a drink.