3. [24 marks] For the following declarations, determine the hexadecimal value stored in memory and the on-screen decimal equivalent, i.e. the value displayed with printf("s", variable). Binary-hexadecimal-decimal conversions may be done by calculator, but other steps such as 2's complement must be shown. a) signed char a = -31; b) unsigned int b - 2022; c) unsigned char c - 187, d) signed int d - 1 000 000, e) signed int -187; f) signed char - 187, g) unsigned int g- 1 000 000; h) unsigned char h - 1299