In a pressure-kerosene stove, (i) We pump kerosene and convert it into vapours. (ii) The vapours are then ignited. Which of the following is true about the above statements?

• A.  (i) is a chemical change; (ii) is a physical change,                 
• B.  (i) is a physical change; (ii) is a chemical change.                 
• C.  Both (i) and (ii) are physical changes.
• D.  Both (i) and (ii) are chemical changes.