Electronic Devices: JEE Main 2025 Physics question

Refer to the circuit diagram given in the figure. which of the following observations are correct? A. Total resistance of circuit is $6\ \Omega$ B. Current in Ammeter is 1A C. Potential across AB is 4 Volts. D. Potential across CD is 4 Volts E. Total resistance of the circuit is $8\ \Omega$. Choose the correct answer from the options given below: