A town measured the length of four city parks. The mean absolute deviation of these lengths was 5 yd. Which could be the lengths of the city’s parks?
A) 60 yd, 70 yd, 80 yd, 90 yd
B) 61 yd, 63 yd, 71 yd, 73 yd
C) 62 yd, 63 yd, 73 yd, 73 yd
D) 63 yd, 66 yd, 72 yd, 75 yd