Pick up the correct statement from the following:
(A) Mistakes arise from inattention, inexperience or carelessness
(B) Systematic errors persist and have regular effects in the survey performances
(C) Accidental errors occur inspite of every precaution is taken
(D) All the above
(A) Mistakes arise from inattention, inexperience or carelessness
(B) Systematic errors persist and have regular effects in the survey performances
(C) Accidental errors occur inspite of every precaution is taken
(D) All the above