1. Identify the physical situation

   The bodies are released on an inclined plane which is stated to be frictionless.

   Also, it is explicitly mentioned: no rolling.

   Therefore, the objects will simply slide down the incline.

2. For motion on a frictionless incline

   The forces on any body are:

   • Weight: $mg$
   • Normal reaction: $N$

   Resolve weight along the incline: $F_\parallel = mg\sin\theta$

   Since there is no friction, this is the only force causing motion along the plane.

3. Apply Newton's second law

   $ma = mg\sin\theta$

   So, $a = g\sin\theta$

4. Dependence on shape?

   The acceleration $a = g\sin\theta$ does not depend on:

   • mass
   • radius
   • moment of inertia
   • shape of the object

   Since there is no rolling, rotational inertia is irrelevant.

5. Compare the given bodies

   • Solid sphere: $a = g\sin\theta$
   • Hollow sphere: $a = g\sin\theta$
   • Ring: $a = g\sin\theta$

   Hence, all have the same acceleration.

6. Evaluate options

   • A: solid sphere — incorrect
   • B: hollow sphere — incorrect
   • C: ring — incorrect
   • D: all same — correct

Final Answer

$\boxed{\text{D: all same}}$