Compared to Conventional Training,what Is a Benefit of Interval Training

Compared to conventional training,what is a benefit of interval training?

A) Aerobic capacity can be increased to the same level,but in less time.
B) It decreases the ability of muscle cells to oxidize carbohydrates so more fat is used
C) It decreases the ability of muscle cells to oxidize fat so that more carbohydrates are used.
D) There is no difference between conventional training and interval training.