Delmo learned that his enemy, Oscar, was confined at the Intensive Care Unit (ICU) of the Philippine Medical Center. Intending to kill Oscar, Delmo disguised himself as a nurse, entered the ICU, and saw a man lying on the hospital bed with several life-saving tubes attached to the body. Delmo disconnected the tubes and left. Later, the resident physician doing his rounds entered the ICU and, seeing the disconnected tubes, replaced them. The patient survived. It turned out that the patient was Larry, as Oscar had been discharged from the hospital earlier. Delmo was charged with frustrated murder, qualified by evident premeditation and treachery as aggravating circumstances. Discuss the propriety of the charge. (4%)