8. (10 points) There is a special calculator. When a natural number between 10 and 49 is input, the calculator first multiplies this number by 2, then reverses the tens and units digits of the result, and finally adds 2 to display the final result. Therefore, among the following four options, ( ) could be the final displayed result.
A. 44
B. 43
C. 42
D. 41
【Answer】Solution: $A: 44-2=42$, when reversed it is $24, 24 \div 2=12; 12$ is a natural number between $10 \sim 49$, meeting the requirement;
$B: 43-2=41$, when reversed it is $14, 14 \div 2=7, 7$ is not a natural number between $10 \sim 49$, not meeting the requirement;
C: $42-2=40$, when reversed it is $4, 4 \div 2=2, 2$ is not a natural number between $10 \sim 49$, not meeting the requirement;
$D: 41-2=39$, when reversed it is $93, 93 \div 2=46.5, 46.5$ is not a natural number between $10 \sim 49$, not meeting the requirement; therefore, the answer is: $A$.