Table 171 -Refer to Table 17

Table 17.1
$$\begin{array}{l}\text { Table } 17.1\\\begin{array} { | c | c | c | c | } \hline{ \text { Cambria } } & & { \text { Bodoni } } \\\hline \begin{array} { c } \text { Tons of rice per } \\\text { day }\end{array} & \text { T-shirts per day } & \begin{array} { c } \text { Tons of rice per } \\\text { day }\end{array} & \text { T-shirts per day } \\\hline 20 & 0 & 100 & 0 \\\hline 18 & 80 & 90 & 100 \\\hline 16 & 160 & 80 & 200 \\\hline 14 & 240 & 70 & 300 \\\hline 12 & 320 & 60 & 400 \\\hline 10 & 400 & 50 & 500 \\\hline 8 & 480 & 40 & 600 \\\hline 6 & 560 & 30 & 700 \\\hline 4 & 640 & 20 & 800 \\\hline 2 & 720 & 10 & 900 \\\hline 0 & 800 & 0 & 1,000 \\\hline\end{array}\end{array}$$
-Refer to Table 17.1, which shows per-day production data of rice and T-shirts for two countries, Cambria and Bodoni. Based on the table, it can be said that the opportunity cost of 1 ton of rice in Cambria is _____

A) 3 T-shirts.
B) 10 T-shirts.
C) 20 T-shirts.
D) 30 T-shirts.
E) 40 T-shirts.