When three coplanar non-parallel forces are in equilibrium. i. they can be represented in magnitude and direction by the three sides of a triangle taken in order. ii. The lines of action meet at a point iii. The magnitude of any one force equals the magnitude of the resultant of the other two forces. iv. Any one force is the equivalent of the other two. Which of the following statements above are correct?

• A.i and iii only
• B.i and ii only
• C.i, ii, iii, and iv
• D.none of them