$20,$ Other things equal, if Norway's trade with the euro zone amounts to $50$ percent of it OND while ita wade with the United States amounts to only $$ percent of CINP.

A$)$ a fixed krone$/$euro exchange rate yielda a greater monetary efficiency gain to Norwegian traders than a fixed krone$/$dollar rate.

B$)$ a fixed krone$/$dollar exchange rate yields a greater monetary efficieney gain to Norwegian traders than a fixed krone$/$euro rate,

$$ a fixed krone$/$euro exchange rate yields a smaller monetary efficiency gain to Norwegian traders than o fixed krone$/$dollar rate.

D$)$ a fixed krone$/$euro exchange rate yields the same monetary effeleney sain to Norweglan trader in a fixed krone$/$dollar rate,