Read the following statements regarding biological museums.

(i) Biological museums are generally set up in educational institutes such as schools and colleges.

(ii) Museums have collections of preserved plant and animal specimens for study and reference.

(iii) Specimens are preserved in the containers or jars in preservative solutions.

(iv) Insects are preserved in insect boxes after collecting, killing and pinning.

(v) Larger animals like birds and mammals are usually stuffed and preserved.

(vi) Skeletons of mammals are not allowed to be kept in museums.

Which of the above statements is/are not correct?

(A) (ii) and (iii)

(B) (i) and (vi)

(C) (v) only

(D) (vi) only