Considering commerce and marketing, which of the following present the most significant obstacle to developing IT security?

a) There is no direct return on investment in building security systems.
b) Security systems are detrimental to usability and can make IT systems less
functional, and therefore less attractive to the consumer.
c) There is pressure to reduce the time it takes to get a new IT product or system
onto the market, so security systems are sacrificed in order to reduce the time-to-
market.
d) All of the above.

Write a new lc-3 trap subroutine (i. e. a subroutine that will be invoked via the trap instruction) that will receive a numeric digit entered at the keyboard (i. e. an ascii character), echo it to the screen, and return in r0 the corresponding numeric value: so if the user types the digit '7', the character '7' will appear on the screen, but the value returned in r0 will be b0000 0000 0000 0111 (#7) you may not use any trap calls in your code - you must implement the "polling" code that interrogates the keyboard status and data registers. ; getnum_tsr ; a subroutine for obtaining a numeric value ; given ascii numeric digit input to keyboard. ; the numeric digit is echoed to the console (e. g. '7' = b0000 0000 0011 0111), ; but the value returned in r0 is the actual numeric value ; corresponding to the digit (e. g. b0000 0000 0000 0111 =