For a particle executing SHM,Potential energy is given by U=21​mω2x2Kinetic energy is given by K=21​mω2(A2−x2)Total energy is U+K=K=21​mω2A2As U=K always(a) is incorrectAs Total energy is constant, (c) is correctAverage Kinetic and potential energy over interval of one time period is =4KA2​(d) is correct and (b) is incorrect