Paragraph- Sent 1: Callimaco is taken by the beauty of Lucrezia , but she is the loyal wife of Nicia , a rich and foolish lawyer .
Sent 2: Callimaco hires the service of a shady ` fixer ' named Ligurio to aid in his quest to sleep with her .
Sent 3: Lgurio informs Callimaco that Nicia and Lucrezia are anxious to have a child .
Sent 4: With the fixer 's help , .
Sent 5: Callimaco masquerades as a doctor and convinces Nicia that the best way for Lucrezia to conceive a child is by her taking a potion made from the Mandrake Root .
Sent 6: He lies and warns Nicia that the first man to sleep with Lucrezia after she has taken the potion will die within eight days .
Sent 7: Together they devise a plan to kidnap a stranger to sleep with Lucrezia and draw out the poison .
Sent 8: Callimaco then disguises himself and arranges to be the one who is kidnapped .
Sent 9: Lucrezia is an honorable woman and does not at first agree to meet with the stranger .
Sent 10: Nicia gets both Lucrezia 's mother , a woman of ill repute , and her confessor Brother Timoteo , a priest of low morals , to aid in convincing Lucrezia of the necessity of the plan .
Sent 11: After finally sleeping with Lucrezia , Callimaco confesses everything .
Sent 12: Lucrezia gives thought to the duplicity of her husband , her mother , and her confessor , and decides that she now wants Callimaco as a lover forever .
Sent 13: Callimaco gets what he had desired and everyone else continues to believe that each had outwitted the others . 
Question: Who helped Callimaco masquerade as a doctor? 
Incorrect Answer: Lucrezia.