Find the Equation of the Tangent Line Of $x ^ { 3 } + y ^ { 3 } = 49 ( x - y )$

Multiple Choice

Find the equation of the tangent line of $x ^ { 3 } + y ^ { 3 } = 49 ( x - y )$ at the origin.

A) y = 49x
B) y = x
C) y = 3x - 49
D) y - 49 = 3(x - y)
E) none of the above