Which of the following statements are NOT correct?

• A.boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
• B.both the boiling point and the saturated vapour pressure of a given liquid depends on the external pressure
• C.the saturated vapour presssure rises with increase in temperature
• D.the saturated vapour pressure is independent of the volume available for the vapour
• E.it is possible to boil water at a lower temperature than 100^oC at high altitude