For the purposes of subsection (1) (b) —

(a) compatibility of further processing shall be assessed considering —

(i) the relationship between the original purpose and the purpose of the intended further processing,

(ii) the nature of the personal data concerned,

(iii) the consequences of further processing,

(iv) how the personal data has been collected, and

(v) the existence of appropriate safeguards; and

(b) further processing for archiving purposes in the public interest, scientific, historical research purposes, or statistical purposes shall not be considered to be incompatible with the initial purposes.