Frameworks are an effective approach to reuse, but are _________ to introduce into software development processes.

Frameworks are an effective approach to reuse, but are _________ to i

1.	Frameworks are an effective approach to reuse, but are _________ to introduce into software development processes.
A.	difficult
B.	expensive
C.	unreliable
D.	difficult and expensive
Answer» E.

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Frameworks are an effective approach to reuse, but are _________ to introduce into software development processes.

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