Technician A says that magnetic lines of force can be seen by ...

[captainjonesify]

Technician A says that magnetic lines of force can be seen by placing iron filings on a piece of paper and then holding them over a magnet. Technician B says that the effects of magnetic lines of force can be seen using a compass. Which technician is correct?
◦ Technician A only
◦ Technician B only
◦ Both technicians A and B
◦ Neither technician A nor B

[debra928]

Both technicians A and B

[captainjonesify]

YES! Correct, THANKS for helping me on my review

[amandalm]

Gracias!