A Coil of Wire Containing N Turns Is in an External

A coil of wire containing N turns is in an external $\vec { B }$ field that is perpendicular to the plane of the coil and it steadily changing in magnitude.Under these circumstances,an emf ε is induced in the coil.If the rate of change of the magnitude of the $\vec { B }$ field and the number of turns in the coil are now doubled (but nothing else changes) ,what will be the induced emf in the coil?

A) 2ε
B) ε/2
C) 4ε
D) ε/4
E) ε