Mackenzie,an Agent for Lindsay,signs an Agreement with Kirk on Lindsay's

Mackenzie,an agent for Lindsay,signs an agreement with Kirk on Lindsay's behalf but ne?glects to tell her that the agreement requires the payment of a certain tax.The government prosecutes Lindsay for failing to pay the tax.She is

A) liable,because notice to Mackenzie is notice to Lindsay.
B) liable,because notice to Kirk is notice to Lindsay.
C) not liable,because Mackenzie did not tell Lindsay about the tax.
D) not liable,because Kirk did not tell Lindsay about the tax.