Which of the instructions should be added to the code fragment below to check whether the Left Shift key currently is pressed down? See corresponding keyboard status bits in the picture: Insert ON Caps Lock ON NumLock ON ScrollLock ON Alt Down Ctrl Down LShift Down RShift Down 0000 0417 xor bx, bx mov es, bx mov al, es:0417h ; MISSING INSTRUCTION jz nolShift Choose missing instruction to insert in the code line marked by the comment "MISSING INSTRUCTION". Select one: and al, 11111101b or al, 2 xor al, 4 test al, 00000010b and bl, 00000010b