The Federal Reserve took more than seven months to develop an enforcement action (MOU) for SVB and failed to deliver it before the bank's failure. Additionally, the transition from the RBO to the LFBO portfolio lacked a defined plan and process, contributing to delays in assessments and supervisory approaches during a critical period of SVB's financial deterioration.

A is incorrect because there is no evidence that the Federal Reserve imposed excessively high capital requirements on SVB. The issues with SVB's oversight were related to delays in enforcement actions and planning during the transition between portfolios, not overly stringent capital requirements.

C is incorrect as there were no indications of overly frequent and intensive audits by the Federal Reserve that disrupted SVB’s operations. The primary issue was the inadequacy and delay in supervisory actions during the bank’s transition from the RBO to the LFBO portfolio.

D is incorrect because SVB was not subjected to international regulatory standards that were not applicable to its business model. The deficiency in the Federal Reserve’s supervision was related to the transitional period and its internal supervisory practices, not the imposition of irrelevant international standards.