Let a, b, c be such
that `b(a""+""c)!=0`
. If
`|a a+1a-1-bb+1b-1cc-1c+1|+|a+1b+1c-1a-1b-1c+1(-1)^(n+2)a(-1)^(n+1)b(-1)^n c|=0`
then the value of n is
(1) zero (2) any even integer
(3) any odd
integer (4) any integer
A. zero
B. any even integer
C. any odd integer
D. any integer
