100 Points! Scientists used to believe that chemical reactions fueled the sun. Why did this lead them to believe that the sun was very young? Pls, answer in 3 sentences. I'll give brainliest.

Two technicians are discussing oil changes. technician a says that waste oil and old filters need to be disposed of according to the law. technician b says that old filters can be returned to the parts department for a core value. which technician is correct?           a. technician a only   b. both technicians a and b   c. technician b only   d. neither technician a nor b