43. Which of the following description about exocrine pancreatic carcinoma is Wrong
(A) The spindle tumor cells of undifferentiated carcinoma of pancreas are positive for cytokeratin, but always negative for vimentin
(B) the average size of tumors at the pancreatic head region is usually smaller than tail region
(C) Acinar cell carcinoma of pancreas has better survival in pediatric patients than adult patients
(D) The osteoclast-like giant cells in the undifferentiated carcinoma with osteoclast like giant cells (UC-OGC) of pancreas is considered as benign in nature