A new generation of sophisticated copy machines, capable of unprecedented detail and accuracy, are prompting the development of more complex currency designs to prevent counterfeiting.
A. sophisticated copy machines, capable of unprecedented detail and accuracy, are
B. sophisticated copy machines, capable for unprecedented detail and accuracy, is
C. sophisticated copy machines, capable of unprecedented detail and accuracy, is
D. sophisticated copy machines, capable for unprecedented detail and accuracy, are
E. sophisticated copy machines that are capable of unprecedented detail and accuracy are

My confusion is that is new generation the subject or Copy machines OA C