A white noise process will have

(i) A zero mean

(ii) A constant variance

(iii) Autocovariances that are constant

(iv) Autocovariances that are zero except at lag zero
(A)(ii) and (iv) only (B)(i) and (iii) only (C)(i), (ii), and (iii) only (D)(i), (ii), (iii), and (iv)
A