The Tables Give Production Possibilities Data for Two Countries, Alpha ${ \text { Alpha's production possibilities } }$

The tables give production possibilities data for two countries, Alpha and Beta, which have populations of equal size.
${ \text { Alpha's production possibilities } }$
$\begin{array}{l}\begin{array} { | l | c | c | c | c | c | } \hline & A & B & C & D & E \\\hline \text { Fish (Tons) } & 80 & 60 & 40 & 20 & 0 \\\hline \text { Chips (Tons) } & 0 & 5 & 10 & 15 & 20 \\\hline\end{array}\\\\\\{ \text { Beta's production possibilities } } \\\begin{array} { | l | c | c | c | c | c | } \hline & A & B & C & D & E \\\hline \text { Fish (Tons) } & 240 & 180 & 120 & 60 & 0 \\\hline \text { Chips (Tons) } & 0 & 10 & 20 & 30 & 40 \\\hline\end{array}\end{array}$ The given data show that

A) Beta has a comparative advantage in producing chips.
B) Alpha has a comparative advantage in catching ?sh.
C) Alpha is subject to constant costs and Beta is subject to increasing costs.
D) Beta is more e?cient than Alpha both in catching ?sh and in producing chips.