在生理条件下合成血红素的限速步骤是合成

A．胆色素原
B．δ-氨基-γ-酮戊酸
C．原卟啉Ⅸ
D．原卟啉原Ⅲ

During an onsite company visit, Marsha Ward, CFA, accidentally overheard the Chief Executive Officer (CEO) of Stargazer, Inc. discussing the company’s pending offer to purchase Dynamica Enterprises, a retailer of Stargazer products. According to the Standards of Practice Handbook, Ward may not use the information to take investment action because:()

A. the information relates to an offer.

B. she does not have a reasonably and adequate basis for taking investment action.

C. acting on the information would breach a duty to both Stargazer and Dynamica.