In a PLC ladder rung, how is the circuit evaluated and when does the coil energize?

In a PLC ladder rung, how is the circuit evaluated and when does the coil energize?

• A. The rung is evaluated from right to left; the coil energizes if any input is true.
• B. The rung is evaluated from left to right; the coil energizes if the path is true.
• C. The rung is evaluated from top to bottom; the coil energizes only if all inputs are false.
• D. The rung is evaluated randomly; the coil energizes if the ladder scan completes.

Answer: (B)