Which 3 options should a data architect recommend to share data between Org A and Org B?

UC has one SF org (Org A) and recently acquired a secondary company with its own Salesforce org (Org B). UC has decided to keep the orgs running separately but would like to bidirectionally share opportunities between the orgs in near-real time.

Which 3 options should a data architect recommend to share data between Org A and Org B? Choose 3 answers.
A . Leverage Heroku Connect and Heroku Postgres to bidirectionally sync Opportunities.
B . Install a 3rd party AppExchange tool to handle the data sharing
C . Develop an Apex class that pushes opportunity data between orgs daily via the Apex schedule.
D . Leverage middleware tools to bidirectionally send Opportunity data across orgs.
E . Use Salesforce Connect and the cross-org adapter to visualize Opportunities into external objects

Answer: C,D,E