Question 18 9 pts Suppose that a program samples the status of the top row of buttons on the BIG8051 (connected to Port P7) and assigns it to the variable x, as shown below: unsigned char x; /* ... */ x = P7; At the time these instructions execute, the user is simultaneously pressing the three buttons highlighted here in red: HW REV. 1.01 BY MIKROELEKTRONIKA P2,3 P2.7 ON P2.2 P7.6 P2.5 P2.4 P2.3 P2.2 P2.0 LY OI 2 E8 P6.7 P6.6 P6.5 P6.4 P6.3 P6.2 P6.1 P6.0 After these instructions execute, what is the value of x? Enter your answer in hexadecimal notation, including the Ox prefix, without any spaces or other symbols