Find the Distance Between the Points $( 2,1,4 ) , ( 10,2,7 )$

Multiple Choice

Find the distance between the points. $( 2,1,4 ) , ( 10,2,7 )$

A) $\sqrt { 78 }$ units
B) $5 \sqrt { 3 }$ units
C) $\sqrt { 74 }$ units
D) $\sqrt { 77 }$ units
E) $2 \sqrt { 19 }$ units