We read about a study that was conducted in $2009,$ in which $177$ responses were received from a questionnaire mailed to CIOs and CEOS in $1,400$ hospitals. Based on the study results, which of the following were the top three management issues in health care information technology $($select all that apply$)$:

$$ A$.$ Implementation of electronic medical records

B$.$ Privacy of electronic records

C$.$ Security of electronic records

D$.$ Reducing healthcare errors with information technology

E$.$ Change management from paper to electronic medical records

F$.$ Health information systems interoperability