Vector A is described as having magnitude -7 and angle 30. Which is an equivalent statement of magnitude and angle of vector A (Note: All angles are measured counterclockwise from the x-axis.) A. magnitude 7; angle 150 degrees
b. magnitude -7; angle -150 degrees
c. magnitude 7; angle 150 degrees
d. magnitude -3.5; angle -30
e. magnitude 7; angle -30