If Rs is the sources resistance, the O/P resistance of an emitter follower using the simplified hybrid model would be

• A. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/338-591-1.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/338-591-2.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/338-591-3.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/338-591-4.png">