A company's issued share capital throughout an accounting period consists of 500,000 ordinary shares of OMR 20 and 8,000 preference shares of OMR 1. Profit after tax for the period is OMR 320,000 and the preference dividend is OMR 8,000. Basic EPS for the period is:

a) OMR 0.552

b) OMR 0.624

c) OMR 0.312

d) OMR 0.756