Answer:
The answer is A. non-operating expense
Step-by-step explanation:
As he operates a retail shop, such advertising is vital to attract customers to the shops and to make potential sales. We can't treat this expenses as administration or production expenses.
We consider this as non operational because advertising is not an operational part of the operations of a retail business. Moreover, we can't consider it as selling expenses because they are mostly incurred during the sales process.