Subject: mathqa
Question: a certain ball team has an equal number of right - and left - handed players . on a certain day , one - third of the players were absent from practice . of the players at practice that day , one - third were right handed . what is the ratio of the number of right - handed players who were not at practice that day to the number of left handed players who were not at practice ?
Option: 
A: 1 / 3
B: 5 / 7
C: 3 / 2
D: 5 / 1
Answer: D