For an inter$-$enterprise system that aims to integrate health data from various sources, what is an indispensable feature for harmonizing information flow?

Group of answer choices

Standardized data exchange formats and protocols to enable seamless interaction between the disparate systems of the entities.

The system should allow for offline data entry to accommodate organizations with intermittent internet access.

Implementation of a distributed ledger technology like blockchain to record all transactions immutably.

A common user interface design across all entities to provide a familiar experience for data entry.