[单选题]
00.08: A pendulum is / )gl az4-12uhlfew nlpulley u--ekn 18mtkd to one side and released. It swings freely to the opposite s1-ynue k8kmt- ide and stops. Which of the following might best represent graphs of kinetic energy $E_k$, potential energy $E_p$ and total energy $E_T$?
