CTET 2 Math and Science Feb 2014 Paper

While teaching the correct method of using a spring balance to Class VIII students, Gunjan mentions the following steps (not in correct sequence) to be followed :
(A) Note the zero error.
(B) Calculate the actual reading.
(C) Note the position of pointer on the graduated scale.
(D) Record the least count of the spring balance.

Which one of the following is the correct sequence of the steps to be followed for the said purpose?