15. Maria was preparing the oven to bake brownies. The recipe's direction was to pre heat the oven to 350 OF but her oven thermometer was in °C. What should be the thermometer reading before Maria puts the baking pan full of the brownie mix in oven? A. 176.67 °C B. 167.67 °C C. 176.76 °C D. 167.76 °C​