Final answer:
The correct statement is A. Food is an inferior good for Meghdad, and his surplus increased by $6 based on the consumption variation measure.
Step-by-step explanation:
Based on the information given, we can determine that Food is an inferior good for Meghdad. An inferior good is a good that people consume less of as their income increases. In this case, when the price of food decreases, Meghdad's consumption of food increases while his consumption of clothing decreases. Therefore, the correct statement is A. Food is an inferior good for him, and his surplus increased by $6 based on consumption variation measure.