A Researcher Is Using a Random Number Table to Pick $5 / 7$

A researcher is using a random number table to pick between two groups labelled X and Y. X is to be chosen with a probability of $5 / 7$ and Y with a probability of 2/7. The researcher assigns the digits {1, 2, 3,
4, 5} to X and the digits $\{ 6,7 \}$ to Y. The researcher uses this section of a random number table: $6820820919$ What are the first and second choices?

A) The first choice is X and the second choice is X
B) The first choice is X and the second choice is Y
C) The first choice is Y and the second choice is X
D) The first choice is Y and the second choice is Y