Evaluate the Improper Integral $$\int _ { 0 } ^ { \infty } x ^ { 5 } e ^ { - x ^ { 6 } / 5 } d x$$

Multiple Choice

Evaluate the improper integral: $$\int _ { 0 } ^ { \infty } x ^ { 5 } e ^ { - x ^ { 6 } / 5 } d x$$ Round to two decimal places, if necessary.

A) 1.67
B) 0.83
C) Undefined
D) 1.25