Assume a program has the following variable definitions: int units; float mass; double weight; and the following statement: weight =mass units; Which automatic data type conversion will take place? Select one: a. units is promoted to a float, mass remains a float, and the result of mass * units is a double. b. mass is demoted to an int, units remains an int, and the result of mass * units is an int. c. units is promoted to a float, mass remains a float, and the result of mass * units is a float