While Driving with Her Two Young Children,Veronique's Car Broke Down

While driving with her two young children,Veronique's car broke down.She called her husband on her cell phone and he told her the phone number of a towing company to call.If the children's behaviour prevents her from repeating the phone number to herself,how long will she have to dial the number before she forgets it

A)  2 seconds
B)  20 seconds 
C)  45 seconds
D)  1 minute