In the following nested loop structure, which loop does the program EXIT first?

In the following nested loop structure, which loop does the program EXIT first? for (initialization 1; condition 1; loop variable 1 increment;)
for (initialization 2; condition 2; loop variable 2 increment;)
for (initialization 3; condition 3; loop variable 3 increment;)
for (initialization 4; condition 4; loop variable 4 increment;)
{ statement block;}

A.
for (initialization 1; condition 1; loop variable 1 increment;)
B.
for (initialization 2; condition 2; loop variable 2 increment;)
C.
for (initialization 3; condition 3; loop variable 3 increment;)
D.
for (initialization 4; condition 4; loop variable 4 increment;)