[Solved] while(*s++=*t++) is equivalent to which expression?

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A.) vs. B.)

B will always copy the first value before checking if the result is 0.
A will do the test first, and if the result is 0, it will stop before ever copying the first value.

C.) vs. B.)

Similar to A, C does the test first, and will never copy a value if the first value is 0.

D.) vs. B.)
After copying a value, T is incremented, then the test is done against T (the next value), instead of the previous T.

solved while(*s++=*t++) is equivalent to which expression?