If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 45. By how much do the two digits differ?	Select the correct option
A) 3  B) 4  C) 5  D) 6  E) 7
Given that (10a + b) - (10b + a) = 45 --&gt; 9a - 9b =45 --&gt; a - b 45 --  9  - 9= 
<gadget id="calculator">45 --  9  - 9</gadget>
<output>45</output>
45 --&gt; a - b= 5.   Answer: 5.
<result>C</result>
If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 45. By how much do the two digits differ?