What happens when you attempt to compile and run the following code?

What happens when you attempt to compile and run the following code?
#include using namespace std;
int main()
{ int i = 5; do { i??; cout<= 0); return 0; }
A. It prints: 43210?1
B. It prints: ?1
C. It prints: 4321
D. It prints: 1

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