Plz need help with due rn for 10 pts

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?