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Consider a real-valued random process
where 
and 
is a positive integer. Here, 
for 
and 0 otherwise. The coefficients 
are pairwise independent, zero-mean unit variance random variables.
Read the following statements about the random process and choose the correct option.
(i) The mean of the process 
is independent of time 
.
(ii) The autocorrelation function 
is independent of time for all 
.
(Here, 
is the expectation operation.)
(i) is TRUE and (ii) is FALSE
Both (i) and (ii) are TRUE
Both (i) and (ii) are FALSE
(i) is FALSE and (ii) is TRUE
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