A business executive and his client are charging their dinner tab on the executive's expense account.The company will only allow them to spend a total of 50$ for the meal.Assuming that they will pay 10% in sales tax for the meal and leave a 15% tip,what is the most their food can cost? Choose the correct choice.
A) 39.52 $ B) 40.63 $ C) 41.63 $ D) 42.15 $ E) 41.15 $

Rationale: "let x is the cost of the food 1.07 x is the gross bill after including sales tax 1.15 * 1.10 x = 50 x = 39.52 hence , the correct option is a"
Answer: A