On June 22,Bondi Beachwear Purchased $3300 Worth of Goods

On June 22,Bondi Beachwear purchased $3300 worth of goods.The terms of the sale were 1/7,net 21.What is the effective annual rate of interest for the credit period for this sale?

A) 34.42 per cent
B) 38.63 per cent
C) 31.38 per cent
D) 29.96 per cent
E) 37.73 per cent