How did Chandragupta conquer Magadha?

(1 point)
Responses

A. by sending in his spies to open the city gates to his soldiers

B. by attacking their borders and slowly weakening the outer reaches of the city first

C. by uniting with the Greeks, combining their forces, and attacking from two directions

D. by attacking with his elephants and wrecking the city

B. by attacking their borders and slowly weakening the outer reaches of the city first