question_answer

The range of the function \[f(x)={}^{7-x}{{P}_{x-3}}\]  is

A)  {1, 2, 3}                     

B)  {1, 2, 3, 4, 5, 6}

C)  {1, 2, 3, 4}                  

D)  {1, 2, 3, 4, 5}

E)  None of these