Which of the following statements are correct regarding levels of measurement?
(A) There is a real zero in the ratio scale.
(B) There is a real zero in the interval scale.
(C) Ratio scale is used in mental measurement.
(D) Interval scale is used in mental measurement.
(E) All the features of the ratio scale are included in the interval scale.
Select the correct answer from the options given below:
1
Only (A) and (C)
2
Only (B) and (D)
3
Only (A) and (D)
4
Only (D) and (E)