Jason is unhappy with the performance of his mutual fund. He sells his shares in the current fund and repurchases shares in a similar fund with the same firm. This transaction 

may not be a taxable event if the managers of the two funds are different. 

is not a taxable event since the funds are with the same company. 

is not a taxable event since the two funds are similar. is a taxable event.

may not be a taxable event if the shares have been held for more than one year.