Which of the following statement is correct regarding the molecule A

Question

 

$\begin{array}{1 1}a)\; A \;on\; treatment\; with\; concentrated\; sulphuric\; acid\; at\; 160 \;degree\; C \;gives\; 2-phenyl\; but-2-ene\\b)\; A\; on\; treatment\; with\; Al_2O_3-pyridine\; at\; 350\; degree\; C \;gives\; 3-phenyl\; but-1-ene\\c)\; Dehydration\; of\; A\; is\; a \;stereoscopic\; reaction\\d)\; Dehydration\; of\; A \;with\; Al_2O_3\; at \;350\; degree\; C \;follow\; E2\; path\;followed\; by \;rearrangement\end{array}$