A 600 N rod is supported by smooth journal bearings at A, B, and C and is subjected to two forces. Determine the reactions at these supports.
a) 600 N, 0 N, 0 N
b) 300 N, 150 N, 150 N
c) 400 N, 100 N, 100 N
d) 200 N, 200 N, 200 N