++++ ++++ ++++ ++++ ++++ Concept Question ++++ ++++ ++++ ++++ ++++ How many zero eigenvalues do you think any element sti?ness matrix (regardless of the type of ?nite element interpolation should have in 2D and 3D, respectively? 1. 3 and 6 2. 2 and 3 3. 4 and 6 1. ++++ Statement (1) 2. ++++ Statement (2) 3. ++++ Statement (3) 4. ++++ None of the above statements 5. ++++ DKDU The correct answer is ++++