Correct option is B
Solution:
B is taller than 10 boys and B is shorter than 13 boys.
Therefore, there are a total of 10 + 1 + 13 = 24 boys in the class (including B).
G is taller than 6 girls and G is shorter than 8 girls.
Therefore, there are a total of 6 + 1 + 8 = 15 girls in the class (including G).
Two boys and three girls are shorter than B, but taller than G.
If B is taller than 10 boys, then B's position among the boys is11th in height order
(since B is taller than 10 boys, but shorter than 13).
Among the girls, there are 15 girls, and we know two boys and three girls are shorter than B.
Therefore, 5 students (2 boys + 3 girls) are shorter than B overall.
Total Number of Students:
There are 24 boys and 15 girls, so the total number of students is 39
Since B is taller than 10 boys, and there are 2 boys and 3 girls shorter than B,
B must be taller than 10 +1 + 3 + 6= 20 students.
Therefore, B is taller than 20 students and shorter than 39 - 20-1 = 18 others.
Thus, the correct option is Option b.
