【单选题】Mr. Brown Smith 555 King Street Auckland New Zealand Dear Mr. Smith, I'm writing to complain that you didn't install the central heating system in my house. We should have the heating on Oct. 10th. Wh...
A.
Because Nancy should correct a mistake in her contract with Mr. Smith.
B.
Because Nancy wants to complaint about none installation to Mr. Smith.
C.
Because Nancy wants to establish a further business relationship with Mr. Smith.
D.
Because Nancy plans to install the heating system in other days.