A Uniform Magnetic Field Makes an Angle of 30 $\degree$ With the Z Axis

Multiple Choice

A uniform magnetic field makes an angle of 30 $\degree$ with the z axis. If the magnetic flux through a 1-m² portion of the xy plane is 5 Wb then the magnetic flux through a 2-m² portion of the same plane is:

A) 2.5 Wb
B) 4.3 Wb
C) 5 Wb
D) 5.8 Wb
E) 10 Wb