The figure shows four vectors A, B, C and D having magnitudes 12.0 m, 10.0 m, 8.0 m, and 4.0 m, respectively. The sum of these four vectors is y 30°/ B D 30° O a. 16.4 m at an angle 77.8° with respect to +X-axis. O b. 16.4 m at an angle 12.3° with respect to +X-axis. c. 19.5 m at an angle 77.8° with respect to +X-axis O d. 19.5 m at an angle 12.3° with respect to +X-axis. O e. 8.20 m at an angle 77.8° with respect to +X-axis. A X

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