When Using a Single-Standard Pedometer Step Goal,the Goal for Youth

When using a single-standard pedometer step goal,the goal for youth is often

A) 4,000 steps per day for girls and 6,000 steps per day for boys.
B) 10,000 steps per day for girls and 12,000 steps per day for boys.
C) 11,000 steps per day for girls and 13,000 steps per day for boys.
D) 15,000 steps per day for girls and 17,000 steps per day for boys.