Technician a Says That Heat Can Safely Be Applied to Boron

Technician A says that heat can safely be applied to boron alloy steel for stress relieving so long as the upper temperature threshold of 1500 degrees Fahrenheit is not exceeded. Technician B says an insert is not allowed by any manufacturer after the 2010 model year when making a sectional replacement on a structural part. Who is correct?

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