Use the table below to answer the following questions.

Table $2\mathrm{.}1\mathrm{.}3$

Production possibilities for a society that produces only two goods $-$ hockey sticks and maple leaves.

$\backslash$table$[[$Possibility$,$Units of Hockey Sticks,Units of Maple Leaves$],[A,3,0],[B,2,3],[C,0,9]]$

Refer to Table $2\mathrm{.}1\mathrm{.}3.$ In moving from combination $B$ to combination $A,$ the opportunity cost of producing one additional hockey stick is

Select one:

a$.2$ maple leaves.

b$.1/2$ maple leaves.

c$.6$ maple leaves.

d$.1/6$ maple leaves.

e$.3$ maple leaves.