A Firm That Uses the Latest Technology ________ Technologically Efficient

A firm that uses the latest technology ________ technologically efficient because ________.

A) is not necessarily; the firm might not use the least amount of inputs to produce a given output
B) is not necessarily; new technology is more expensive than old technology
C) is; efficiency is about costs rather than when the technology was developed
D) is; new technology isn't developed unless it is efficient
E) is; most consumers want access to the latest technology