执行下面Python代码后,输出的结果不可能是89781。( )
1 import random 2 3 i = 1 4 s = "" 5 while i <= 5: 6 a = random.randint(0, 9) 7 if a % 3 == (i + 1) % 3: 8 s += str(a) 9 i += 1 10 print(s)