Semi-automatic Welding : Semi-automatic welding is one in which equipment used controls the filler metal feed.  A wire feeder is attached to the welding equipment which advances the filler metal continuously through welding torch and the torch is controlled manually for the welding. The examples of this welding technique are FCAW (Flux cored arc welding i.e. MAG welding), GMAW (Gas metal arc welding i.e. MIG welding) and GTAW (Gas tungsten arc welding i.e. TIG welding).

Hence, the correct option is (B).