The product of the following reaction is:
$CH_3-CH=CH-CH_3 \xrightarrow{MCPBA, CH_2Cl_2} \text{Product}$

Give the order of stability for different alkenes.

The reaction of $1,3$-butadiene with $1$ equivalent of $HBr$ at different temperatures yields products $A$ and $B$. Identify the relationship between $A$ and $B$. The reaction scheme is as follows:
$CH_2=CH-CH=CH_2 + HBr (1 \text{ eq}) \xrightarrow{25^{\circ}C} A$
$CH_2=CH-CH=CH_2 + HBr (1 \text{ eq}) \xrightarrow{-80^{\circ}C} B$

Assertion : $trans-2-Butene$ on reaction with $Br_2$ gives $meso-2,3-dibromobutane$.
Reason : The reaction involves $syn-addition$ of bromine.

At $530 \ K$,glycerol reacts with oxalic acid to produce:

The stability order of the given alkenes is