The Order of the Letters Along the Rows of Computer

Multiple Choice

The order of the letters along the rows of computer keyboards could be changed to allow users to type faster, but this would inconvenience the vast majority of people who learned to type with the current keyboard layout.The costs of switching to a new layout make this change unlikely.This is an example of

A) path dependency.
B) how social influences overwhelm the substitution effect of a price change.
C) how the elasticity of demand for typewriters has been affected by externalities.
D) how consumers sometimes do not behave rationally.