The Following Table Shows Per-Day Production Data of Rice and T-Shirts

The following table 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 a ton of rice in Bodoni is _____. ​
Table 19.1
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A) 20 T-shirts
B) 3 T-shirts
C) 4 T-shirts
D) 10 T-shirts
E) 2 T-shirts