All declarations done properly. f) char s[3] = {d, g, k); (x - toupper (s[0])); What is contained in x (Upper case X, Lowe case x; none of these (which)). f_ what is x___ g) CPU has 256 registers of 256 bits each; additional 64 registers of 512 bits each, 16 I/O buffers of 1024 bits each. For each function call, all the CPU resources need to be stacked. How much stack memory in bytes is occupied for 16 nested function calls, being called from the main() program. .g Amount of Stack memory