Which of the following data is not primary ?
(A) By visiting a certain class, gathering information about attendence of students.
(B) By actual visit to homes, to find number of family members.
(C) To get information regarding plantation of soyabean done by each farmer
from the village Talathi.
(D) Review the cleanliness status of canals by actually visitiing them.
Hence, the correct alternative answer is (A).