One of the Factors That Complicates the Elimination of Legacy

One of the factors that complicates the elimination of legacy systems is the:

A) costs associated with breaking extended vendor or outsourcer agreements.
B) low market value for outdated hardware and software.
C) absence of regulatory mechanisms to handle the efficient disposal of legacy systems.
D) unavailability of suitable data porting methods to offset data redundancy.
E) frequency at which technology improves as per Moore's law.