A. Patients' chart notes must be typed or keyed into an electronic medical record system to record the progress of the patientB. Medical and office supplies have to be ordered and an inventory keptC. When a physician attends a convention or delivers a lecture, the assistant may be responsible for preparing the manuscript and setting up travel arrangementsD. All of the above
Since there are no options listed to choose from, my best guess would be watches, since a lot of apple watch products are now sold with built in heart monitors.