Consider the execution of the following code segment:

for$($int i $=0$; i $<20$; increment $)$

cout $<<$ i $<<$ endl;

If the last value printed in the screen was $15,$ then what was the increment expression?

Group of answer choices

i $=$ i $+5$;

i $=$ i $*5$;

i $=$ i $+10$;

i $=$ i $+1$;