The average of 10 numbers was calculated as 17. It is discovered later on that while calculating the average, one number, namely 56, was incorrectly read as 26. What is the correct average?	Select:
A) 19
B) 20
C) 21
D) 22
E) 23
10*17 - 26 + 56= 
<gadget id="calculator">10*17 - 26 + 56</gadget>
<output>200</output>
200   200 / 10= 
<gadget id="calculator">200 / 10</gadget>
<output>20</output>
20   The answer is 20.
<result>B</result>
The average of 10 numbers was calculated as 17. It is discovered later on that while calculating the average, one number, namely 56, was incorrectly read as 26. What is the correct average?