Suppose 25 Cardinals and 25 Bluejays Were Ranked for Resistance

Suppose 25 cardinals and 25 bluejays were ranked for resistance to air pollution with the rank of one going to the most resistant bird. The smaller sum of ranks, 738, was for cardinals. The conclusion from these data is that

A) a Wilcoxon matched-pairs signed-ranks test is appropriate
B) cardinals are significantly more resistant than bluejays
C) bluejays are significantly more resistant than cardinals
D) bluejays and cardinals are not significantly different on resistance to air pollution.