An investor purchases 100 shares for $8 on March 1, then sells the shares for $6.50 on March 21. If the investor repurchases the shares on April 10, for $6.50 and holds them until May, what kind of loss is incurred from the March 21st sale?

A) there is no loss

B) superficial loss of $150

C) capital loss of $150

D) capital loss of $1.50