For regular-way contracts, the IASB gives the option to follow either trade date accounting or settlement date accounting, provided it is followed consistently for purchases and sales of financial assets in the same category. This accounting standard is as per

a. U.S. GAAP (generally accepted accounting principles)

b. FASB (Financial Accounting Standards Board)

c. IFRS (International Financial Reporting Standards)

d. GASB (Governmental Accounting Standards Board)

e. IASC (International Accounting Standards Committee)