Correct Option: A

After connecting a voltage source of V

Rth =	V	=	50I	= 50 Ω
	I		I

V₁ = V₂
⇒ (10k) (– i_b) = 100 (I + 99i_b + i_b)
and – 10000i_b = 100I + 100 × 100i_b
= 100I + 10000i_b
⇒ – 20000i_b = 100I

ib = -		100		I =		-	I
		20000					200

= 50I
⇒ V/I = 50 Ω