What Is the Main Idea of the Subsection Titled "Why

What is the main idea of the subsection titled "Why Informatics Is Needed in Healthcare: An Example"?

A) An interoperable healthcare system that provides clear, concise patient data and information among institutions is lacking in many facilities, and its presence would greatly facilitate things such as patient transfers.
B) The quality of discharge communication during transfers of geriatric patients from hospital to nursing home is generally high.
C) Skilled nursing facilities aren't trained enough to identify the information they need to facilitate a high-quality transition of a patient into their facility.
D) Healthcare informaticians alone are responsible for building interoperable systems that will facilitate communication between and among healthcare facilities.