Iran lost to its powerhouse rival 8-0 in Group A. Host Italy also defeated Slovenia 2-0 in the group.
Iran has been scheduled to face Slovenia on Thursday and Italy meets USA.
Group B consists of Japan, England, Norway and Russia.
Each team will play a placement match on April 28 with the two countries that win the two groups playing for the championship.
The second-place finishers will play for third, the third-place finishers will play for fifth and the fourth-place finishers will play for seventh.