$(10$ points$)$ Take a look at the following given information:

area $(a,b)$:$0x400000$

printf$($s$,$ dots

mystery$($a$,$b$)$: $0$x$4014$F$8$

main$($a$,$b$)$: $0$x$4018$E$4$

init$()$: $\}\{8\}$

pi: $010000000$

base: $010000004$

height: $0$x$10000008$

width: $0x1000000C$

radius: $010000010$

str$1$: $010000014$

On the CPU:

$Spc=0004002AC$

$$sp=07$ FFFFFB$0$

$$ra=000401A08$

a$.$ What function is running? area$($a$,$b$)$

b$.$ Who called it$?$ main$($a$,$b$)$

c$.$ What's the stack depth? $3$

d$.$ What is the stack trace? area, main, init

$($list the order that the functions have been called, beginning with the current one & ending with the first one.$)$

The runtime stack:

$\backslash$table$[[,],[,$dots

The answer is provided please show and explain how to get the answer.