The blocks B and C in the figure have mass m each. The strings AB and BC are light, having tensions `T_(1)` and `T_(2)` respectively. The system is in equilibrium with a constant horizontal force mg acting on C.
A. `tan theta_(1) = 1//2`
B. `tan theta_(2) = 1`
C. `T_(1) = sqrt(5)mg`
D. `T_(2) = sqrt(2)mg`
