After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of e

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After landing on an unexplored Klingon planet, Spock tests forthe direction of the magnetic field by firing a beam of electronsin various directions and by recording the followingobservations:
Electrons moving upward feel a magnetic force in the northwestdirection.
Electrons moving horizontally toward the north are pusheddownward.
Electrons moving horizontally toward the southeast are pushedupward.
Mr. Spock therefore concludes that the magnetic field at thislanding site is in which direction?
A) toward the west
B) toward the east
C) toward the northeast
D) toward the southeast
E) toward the southwest