Detective IQ Challenge 7

Detective Mehul and the airport thief

On a busy Monday morning, while the airport was filled with chaos, Rohan sits on a bench sipping his coffee in peace because his flight had been delayed. He leaves his belongings on the seat and goes to the washroom. 
He is astonished upon seeing what had happened within these few minutes!  His cellphone had been stolen. Detective Mehul happens to be near the crime scene and takes matters in his own hands. He begins questioning everyone around. 
 Person A says, “I have a flight to Mumbai right now and I don't have time for all of this.”  Person B says, “My flight to Delhi is leaving early, so I must run.”  Person C says, “I was in the washroom; I just came here. I don't know anything.” 
After hearing all the three men, Mehul understands that one of the three is lying. Logical Army Will you help Mehul in catching the thief?  So tell me, who among the three is lying and who stole Rohan's phone A, B, or C ? 
Observe the image, put your logic to use and choose the correct option! Don't forget to check where you stand on the leaderboard!