question_answer

If the distance between the points (a, 2) and (3, 4) be 8, then a =

A)  \[2+3\sqrt{15}\]                       

B)  \[2-3\sqrt{15}\]

C)  \[2\pm 3\sqrt{15}\]                   

D)  \[3\pm 2\sqrt{15}\]

E)  None of these