A. Elements with can have multiple value because multiple checkboxes can be selected and part of same set
B. Elements with can have same value because multiple radio buttons can be selected and part of same set
C. Elements with can have same value because only one checkbox can be selected and part of same set
D. Elements with can have same value because only one radio button can be selected and part of same set

Solution

D. Elements with <input type="radio"> can have same value because only one radio button can be selected and part of same set