b because it contains 40% of the possible results from the random list.
0,1,2,3 v 4,5,6,7,8,9
4 integers to 6 integers
40% success vs 60% fail
step-by-step explanation:
t= half of the arc subtended by t.
r= half of the arc subtended by r.
t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180