Which of the Following Methods Can Help Improve the HCI

Multiple Choice

Which of the following methods can help improve the HCI quality of an open source software product?

A) attracting more developers into the software development
B) letting non-professional real end users to write the codes for software interface
C) raising funds to hire professional HCI experts for the software development
D) hold a competition for functionality test among the software developers
E) publishing a human interface guidelines among the developer