Seals for a Manual Transmission Are Being Discussed

Seals for a manual transmission are being discussed. Technician A says that many seals consist of a stamped metal case with a flexible sealing lip and an internal spring. Technician B says that a seal referred to as a Scotseal does not have a single sealing lip, but rather multiple sealing lips on the outside of the seal. Who is correct?

A) Technician A
B) Technician B
C) Both technicians A and B
D) Neither technician A nor B