Which of These Describes the Problem with Administering Physical Fitness

Which of these describes the problem with administering physical fitness tests in children?

A) Being able to sufficiently motivate the youngster for maximal performance
B) Accurately determining whether a maximum effort has been achieved
C) Overcoming the fears of anxious parents
D) All of these are correct.
E) Accurately determining whether a maximum effort has been achieved and overcoming the fears of anxious parents only