A9. Jožko is planning to tile a courtyard that is $5.5 \mathrm{~m}$ long and $4.5 \mathrm{~m}$ wide. On the floor, he will lay tiles of size $20 \mathrm{~cm} \times 20 \mathrm{~cm}$, which are packed in boxes of 20 tiles each. What is the minimum number of boxes of tiles he will need?
(A) 30
(B) 31
(C) 32
(D) 62
(E) 619