int d, g; void main(void) { int a, b, c; . . . } void fun1(void) { int a, c, d; . . . <--------------- 2 } void fun2(void) { int b, d, e; . . . } void fun3(void) { int d, e, f; . . . <--------------- 1 }

Given the code listing, which identifiers are part of the referencing environment at point 2 in the code, assuming static scoping is used. Check all that apply.

Group of answer choices

d (global)

g (global)

a (main)

b (main)

c (main)

a (fun1)

c (fun1)

d (fun1)

b (fun2)

d (fun2)

e (fun2)

d (fun3)

e (fun3)

f (fun3)