Consider four slender rods:

$"$A$"$ has a length of $1$ m and is made of light wood; $"$ B $"$ has a length of $1\mathrm{.}5$ m and is made of steel;

$"$C$"$ has a length of $2$ m and is made of light wood; $"$D$"$ has a length of $2\mathrm{.}5$ m and is made of steel.

In all of them mass is uniformly distributed along the length. All are pivoted at one end and are initially supported in a horizontal position. When they are released, gravity makes them rotate about their pivots. Immediately after they are released, which slender rod has the greatest angular acceleration? Neglect any friction in the system.

$($A$)$ RodA

$($B$)$ RodB

$($C$)$ RodC

$($D$)$ RodD

$($E$)$ All angular accelerations are me same.