Many birds are injured or killed by flying into windows. it appears that birds don't see windows. can tilting windows down so that they reflect earth rather than sky reduce bird strikes? place six windows at the edge of a woods: two vertical, two tilted 20 degrees, and two tilted 40 degrees. during the next four months, there were 53 bird strikes, 31 on the vertical window, 14 on the 20-degree window, and 8 on the 40-degree window. if the tilt has no effect, we expect strikes on all three windows to have equal probability.

the p-value for the test is,
a) 0.01 < p < 0.02.
b) 0.0025 < p < 0.001.
c) p < 0.005.
d) 0.0005 < p < 0.001.