Beth and Kate,trying to Beat the Competition to the Market,were

Beth and Kate,trying to beat the competition to the market,were in a mad race to complete a book with a computer program that would aid gardeners in designing and maintaining their gardens.Because they knew another group in town was working on a similar project,they were very fearful that their work would be plagiarized (copied) .Which of the following is false with regard to their safeguarding their work?

A) They should mark the work "confidential."
B) They could require employees and others who must have access to the work to sign "non-disclosure" agreements in which those persons acknowledge that information about the work is confidential and shouldn't be disclosed without consent.
C) After the book and program are finished,they can register copyright in them even before they have them published.
D) They could try to keep the information and program secret (i.e.,only disclose the parts of it that the individual employees had to know to do their jobs) .
E) They could register the book and program under the provincial Trade Secrets Act.