Which of the following statements is/are correct ?
A. (a) Decaline exist in two geometrical isomers, cis and trans.
B. (b) cis from is fixible and has (a, e) conformer.
C. (c) trans from is rigible and has (e, e) conformer and is more stable than cis from.
D. (d) cis from is rigid and trans from has lower energy.
