Gaithersburg Toys hires Pep Line Trucking Co. to deliver an eight-foot-tall stuffed animal giraffe to a home. The giraffe weighs twenty pounds. The driver of the Pep Line Trucking Co. truck, Mr. Gonzalez, hires a day laborer, Mr. Gomez, to carry the giraffe into the home. Mr. Gomez brings his brother-in-law, Mr. Suarez, along to help carry the giraffe. When the truck arrives at the home, Mr. Suarez gets into an argument with Ms. Lyon, who is accepting delivery of the giraffe on behalf of her brother. After Mr. Suarez drops the giraffe on the ground, Ms. Lyon stated she would not tip either Mr. Gomez or Mr. Suarez. Mr. Suarez responded by beating Ms. Lyon with the giraffe causing significant injuries. Ms. Lyon sues all parties involved.

Is Gaithersburg Toys liable? Is Pep Line Trucking Co. liable? Is Mr. Gonzalez liable? Is Mr. Gomez liable? Please succinctly explain why or why not.