The Standard Backward Difference Approximation Of $y ^ { \prime } ( x )$

Multiple Choice

The standard backward difference approximation of $y ^ { \prime } ( x )$ is

A) $( y ( x + h ) - y ( x ) ) / h$
B) $( y ( x ) - y ( x - h ) ) / h$
C) $( y ( x + h ) - y ( x ) ) / h ^ { 2 }$
D) $y ( x + h ) - y ( x )$
E) $y ( x ) - y ( x + h )$