What is the result if you divide 18r4 s5 t6 / -3 r2 st3 ?
A–6r2s4t3
B6r2s4t3
C–6r2s5t3
D6r2s5t3
A–6r2s4t3
B6r2s4t3
C–6r2s5t3
D6r2s5t3