A Vehicle Comes into the Shop with a Complete Transmission

A vehicle comes into the shop with a complete transmission failure. The transmission is disassembled and the 3rd gear drum has large amounts of discoloration and the frictions are burned. Tech A states that this could be caused by a plugged reed valve. Tech B states this could be cause by a bad bearing on the secondary shaft. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B