How should the wire frame be oriented in a uniform magnetic field so that the magnetic flux through the surface limited

How should the wire frame be oriented in a uniform magnetic field so that the magnetic flux through the surface limited by it is: a) equal to zero; b) is maximal in modulus and negative; c) maximum; d) equal to half the maximum value?

a) so that the normal vector is perpendicular to the magnetic induction vector; b) the angle between the normal vector and the magnetic induction vector must be equal to 180 °; c) the angle between the normal vector and the magnetic induction vector must be 0 °; d) the angle between the normal vector and the magnetic induction vector must be 60 °

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