Spending a large amount of money on advertising is the firm can signal the high quality of its product.
Companies spend sufficient amount of money on advertising because, promotions play an essential role, and it is direct related to the selling of the end products, and eventually it helps them to generate more revenue.
Thus, option A is correct.
For further deatils about companies spend large amount on advertising, click here:
https://brainly.com/question/14578922
#SPJ1