At what speed and in what direction is the boat traveling across the river, considering that the river is moving east at 2.51 m/s, the boat starts from the dock heading 31.8 degrees north of west at 8.43 m/s, and the river is 1120 m wide?
a. The boat is traveling at a speed of 8.43 m/s in a direction of 31.8 degrees north of west, and the river is carrying it east at 2.51 m/s.

b. The boat is traveling at a speed of 5.35 m/s in a direction of 58.2 degrees north of west, and the river is carrying it east at 2.51 m/s.

c. The boat is traveling at a speed of 8.43 m/s in a direction of 31.8 degrees north of west, and the river is carrying it east at 5.94 m/s.

d. The boat is traveling at a speed of 5.35 m/s in a direction of 58.2 degrees north of west, and the river is carrying it east at 5.94 m/s.