The table summarizes the distribution of age and assigned group for 1…

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The following table:
,"0-9 years 10-19 years","20+ years","Total"
"Group A","19 5","11","35"
"Group B","4 23 8",,"35"
"Group C","26 8","1","35"
"Total","35 35","35","105"

The table summarizes the distribution of age and assigned group for 105 participants in a study. One of these participants will be selected at random. What is the probability of selecting a participant from group A, given that the participant is at least 10 years of age?

\frac{2}{7}

\frac{3}{7}

\frac{19}{35}

\frac{6}{7}