From Freud's Perspective, a Likely Reason for Someone to Become

From Freud's perspective, a likely reason for someone to become fixated at the oral stage is that he or she

A) grew up in a home where everyone shouted.
B) was toilet trained too late.
C) was weaned from breastfeeding too early.
D) grew up in a home where everyone talked a lot.
E) suffered a mouth injury that gave pleasure when it healed.