An I-Beam Having a Mass of 810 Kg and Length

Multiple Choice

An I-beam having a mass of 810 kg and length of 5.1 m has one end attached to a vertical wall.The I-beam is allowed to pivot up and down about the attachment location. A cable is then attached from the vertical wall to the other end of the I-beam. The cable makes an angle of 31º with the I-beam, and the I-beam is horizontal (parallel with the ground) . The tension in the cable is

A) 7700 N.
B) 4600 N.
C) 6600 N.
D) 2700 N.