Which of the following statements is/are correct in the synthesis of cycloalkanes by intramolecular cyclisation?
(A) Large rings with more six C atoms are stable but difficult to prepare
(B) Decreasing order of thermal stability of cyclic rings is 6 > 7, 5 > 8, 9 >> 4, 4 > 3
(C) Decreasing order of probability of rings closure is 3 > 4 > 5, > 6 > 7 > 8 > 9
(D) Ease of synthesis of cyclo compounds is 5 > 3, 6 > 4, 7, 8, 9
