the first row of the table is know as the table header.
The answer you are looking for would be A. Hardware can be an external tool, where as software is an internal tool. Hope this helped!
Answer:
1010 0111 1101 1111
Explanation:
A = 10 in decimal = 1010 in binary
7 = 7 in decimal = 0111 in binary
D = 13 in decimal = 1101 in binary
F = 15 in decimal = 1111 in binary
Therefore 0xA7DF = 1010 0111 1101 1111 in binary