Growth hormone release during resistance exercise is affected primarily by:
A. The type of resistance training protocol, with shorter rest periods producing higher serum concentrations than longer rest protocols
B. Only the total amount of weight lifted
C. Exclusively by the athlete's age, regardless of exercise protocol
Answer in the poll, then explain your rationale below in the comments! I'll follow up with my breakdown of the question after enough people have responded.
From Chapter 4: Endocrine Responses to Resistance Exercise
DCO Code: 1.F2
NOTE: Image is for illustration purposes, not needed to answer the question.