The minimum area of the triangle formed by any tangent to the ellipse $\frac { x ^ { 2 } } { a ^ { 2 } } + \frac { y ^ { 2 } } { b ^ { 2 } } = 1$ and the coordinate axes is\\
(A) $a b$\\
(B) $\frac { a ^ { 2 } + b ^ { 2 } } { 2 }$\\
(C) $\frac { ( a + b ) ^ { 2 } } { 2 }$\\
(D) $\frac { a ^ { 2 } + a b + b ^ { 2 } } { 3 }$