Based on 90, first calculate the sum of all numbers higher than 90, then divide by 12, and then add 90.

( 1+7+4+6+5+3+5+ 10+2+9+3- 1)÷ 12+90

=54÷ 12+90

=4.5+90

=94.5

A: The average score of this group is 94.5.