Answer: B

If it is expected that some information may have a significant impact on the rights and interests of fund share holders or the price of fund shares, then the information is significant, and the related event is significant. The information disclosure obligor shall prepare and disclose an interim report within 2 days from the date of the major event. Major events of the fund may include: convening of fund share holders' meeting, early termination of fund contract, extension of fund contract term, change of fund operation mode, replacement of fund manager or custodian, change of chairman, general manager and other senior managers of fund manager, head of fund custodian department (item C is correct), litigation involving fund manager, fund property and fund custody business, and the wrong amount of fund share net valuation reaches .5 of fund share net value. Disclosure of deviation information in the interim report. When the absolute value of the negative deviation between the shadow pricing and the net asset value of the fund determined by the amortized cost method exceeds .25%, the fund manager shall report to the China Securities Regulatory Commission within 2 trading days and fulfill the obligation of information disclosure according to law. (item a is correct) so item b meets the meaning of the question.