Simplify completely quantity 5 x squared plus 9 x minus 2 over quantity x squared plus 12 x plus 20 times quantity x squared plus 17 x plus 70 over quantity 15 x minus 3
A. x plus 7 over 3
B. x plus 10 over 3
C. x plus 7 over 3 open parentheses x plus 10
D. x plus 2 over 3 open parentheses x plus 10
