Answer the Question(s)below Based on the Information in the Following

Multiple Choice

Answer the question(s) below based on the information in the following table
Country
$$\begin{array} { | c | c | c | } \hline \text { Goods } & \mathrm { A } & \mathrm { B } \\\hline \mathrm { X } & 3 & 9 \\\hline \mathrm { Y } & 4 & 2 \\\hline\end{array}$$ (numbers indicate hours of labor per unit of output)
-Refer to the table above.For trade to occur along the lines of comparative advantage,wages in A relative to wages in B (measured in the same currency)

A) must be at least twice but less than 3 times as great.
B) must be less than three times as small.
C) must be greater than $2 but less than $3.
D) Need more information to answer.