There are safety devices that protect from sharps injuries. characteristics of these devices include that they do not interfere with patient care, are easy to use and have clear instructions, can be engaged with one hand, enable hands to remain behind the exposed sharp, and are visibly different when activated. what is missing from this list? a. come attached with safety features that can easily be removed b. come attached with safety features that cannot be removed c. require uncapping after use d. have needles that are not retractable