In the Previous Problem, the Error in the Classical Runge-Kutta $x = 0.1$

Multiple Choice

In the previous problem, the error in the classical Runge-Kutta method at $x = 0.1$ is (Hint: see the previous five problems.)

A) 0.00083
B) 0.000083
C) 0.000000083
D) 0.0000083
E) 0.00000083