Add or Subtract the Radical Expressions as Indicated, If Possible $\sqrt { 12 x } - 5 \sqrt { 3 y } + \sqrt { 48 x }$

Multiple Choice

Add or subtract the radical expressions as indicated, if possible. $\sqrt { 12 x } - 5 \sqrt { 3 y } + \sqrt { 48 x }$

A) $2 \sqrt { 15 x } - 5 \sqrt { 3 y }$
B) $6 \sqrt { 3 x } - 5 \sqrt { 3 y }$
C) $\sqrt { 60 x + 15 y }$
D) $\sqrt { 3 x y }$