A9. When Cene runs $1000 \mathrm{~m}$, Tone is $10 \mathrm{~m}$ behind him. When Tone runs $1000 \mathrm{~m}$, Milan is $20 \mathrm{~m}$ behind him. By how many meters will Cene outpace Milan in a $1000 \mathrm{~m}$ race?
(A) 30.1
(B) 30
(C) 10
(D) 29.8
(E) It is impossible to determine.