There is a landscape area with 20 rotary sprinkler heads. After placing catchment devices for a water audit, the average precipitation rate for the entire area was calculated to be 0.71 ''/hr. The lowest quarter (driest quarter) was calculated to be 0.48''/hr. What is the distribution of uniformity (DU) for this property?
a) 68%
b) 74%
c) 80%
d) 85%
