甲有鸡血石一块，寄放于好友乙处。甲死后，乙擅自将该鸡血石以1万元售与知情人丙。丙系著名篆刻家，将该鸡血石雕成印章一枚，以10万元价格转售与不知情的丁。请问：

戊若向丁行使请求权，下列哪些说法正确()

A．戊可向丁要求返还印章

B．戊可向丁主张不当得利请求权

C．戊可向丁要求赔偿损失

D．戊无权向丁主张权利

We _____ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

A. needn't

B. may not

C. shouldn't

D. mustn't