Which of the following sentences uses a hyphenated adjective correctly?

A) Asia felt that a vacation to the mountains was much-needed after a long and challenging year.
B) The cold-blooded reptile basked in the warm sun on the first day of April.
C) The technology allowed customers to take virtual vacations; it was cutting-edge.
D) The novel, which was well-written, received numerous awards for its unique use of multiple narrators.