Which Is the Most Accurate Description of the Courts' General

Which is the most accurate description of the courts' general approach to interpreting contracts in English law?

A) The courts adopt a literalist approach and look at the dictionary meaning of the words used by the parties.
B) The courts look at the meaning which the document would have, taking into account the parties' subjective intentions at the time of contracting.
C) The courts look at the meaning which the document would convey to a reasonable person having all the background knowledge which would reasonably have been available to the parties at the time of contracting.