A Researcher Is Using a Random Numbers Table to Pick

A researcher is using a random numbers table to pick between two groups labeled X and Y. X is to be chosen with probability 5/7 and Y with probability 2/7. The researcher
Assigns the digits 1, 2, 3, 4, and 5 to X, and she assigns the digits 6 and 7 to Y. The
Remaining digits are neglected. The researcher uses this section of a random number table
7 9 2 1 5 7 7 3 1 1
What are the first and second choices?

A) The first selection is X, and the second is X.
B) The first selection is Y, and the second is Y.
C) The first selection is Y, and the second is X.
D) The first selection is X, and the second is Y.