intersection of 3 array in o 28n 29 python

1def intersection(A, B, C):
2    '''
3    Intersection of 3 array in O(n).
4    '''
5    i = j = k = 0
6    len1 = len(A)
7    len2 = len(B)
8    len3 = len(C)
9	
10    while (i < len1 and j < len2 and k< len3):
11        
12        if (A[i] == B[j] and B[j] == C[k]):
13            print(A[i])
14            i += 1
15            j += 1
16            k += 1
17        elif A[i] < B[j]:
18            i += 1
19        elif B[j] < C[k]:
20            j += 1
21        else:
22            k += 1
23