1. Mya is in a remote rural community where there is no sewage system, but only septic tanks (storage units for personal waste that must be emptied regularly). The local government uses the services of the business Billy's Sewage to empty the septic tank. Billy is the sole proprietor of the business, and the only person in town with the tools to complete the job. He empties the tanks not just of the local government buildings, but is also hired by private businesses and residences. Billy invoices all of them individually.

Billy negligently forgets to remove a septic tank cover for City Hall. Mya falls into an unmarked, open septic tank while walking through a public park near City Hall. She breaks her leg and becomes seriously ill from the waste, causing her to be unable to work for the next 12 months.

Mya asks you who she should sue: a) the local government, b) Billy's sewage, or c) both. Explain your reasoning.