Sphere A emits blackbody radiation at a rate of P0. Sphere B has the same temperature as A but twice the radius. Sphere C has the same radius as A but twice the temperature. Which of the following statements is true? (If there is more than one, you must select all of them.) A) Sphere B radiates heat at a rate of 4*P0
B) Sphere C radiates heat at a rate of 4*P0
C) Sphere B radiates heat at a higher rate than sphere C
D) Sphere C radiates heat at a higher rate than sphere B