Object Request Broker (ORB) is
I. A software program that runs on the client as well as on the application server.
II. A software program that runs on the client side only.
III. A software program that runs on the application server, where most of the components reside.
- $I$, $II$ & $III$
- $I$ & $II$
- $II$ & $III$
- $I$ only