What is equivalent to the fraction 10/10

Here are some fractions that are equivalent to 10/10:

1/1
2/2
3/3
4/4
5/5
6/6
7/7
8/8
9/9
10/10
11/11
12/12
13/13
14/14
15/15
16/16
17/17
18/18
19/19
20/20
21/21
22/22
23/23
24/24
25/25
26/26
27/27
28/28
29/29
30/30
31/31
32/32
33/33
34/34
35/35
36/36
37/37
38/38
39/39
40/40
41/41
42/42
43/43
44/44
45/45
46/46
47/47
48/48
49/49
50/50
51/51
52/52
53/53
54/54
55/55
56/56
57/57
58/58
59/59
60/60
61/61
62/62
63/63
64/64
65/65
66/66
67/67
68/68
69/69
70/70
71/71
72/72
73/73
74/74
75/75
76/76
77/77
78/78
79/79
80/80
81/81
82/82
83/83
84/84
85/85
86/86
87/87
88/88
89/89
90/90
91/91
92/92
93/93
94/94
95/95
96/96
97/97
98/98
99/99

The correct answer is: b