Recent Supreme Court Decisions Have Restated the Law Relating to Interpretation

Recent Supreme Court decisions have restated the law relating to interpretation of contracts (Rainy Sky (2011) ; Arnold v Britton (2015) and Wood v Capita (2017) ) . Which of the following statements are true?

A) The court's task is to ascertain the parties' intentions, even if these are inconsistent with the language used to express their agreement.
B) The court can have regard to pre-contractual negotiations and post-contractual conduct to ascertain the meaning of the agreement.
C) The court should focus on the language with which the parties' expressed their agreement and its objective meaning.