Given a typical instrument tag like TX-PP-01-100-AL, decode its meaning and what information it conveys about location, function, and range.

• A. The tag indicates transmitter for process pressure in loop 01 with device number 100; AL suffix indicates alarm; decoding is universal.
• B. TX identifies a transmitter; PP denotes process pressure; 01 indicates loop/area; 100 is the device number; AL denotes an alarm service or tag suffix, with final decoding defined by the plant's tagging legend.
• C. The tag maps directly to a calibration constant embedded in digits.
• D. The tag is for decorative purposes only.

Answer: (B)