All of the citizens of a country have a four-character or five-character national identification code that is created using the 26 letters of the alphabet and the 10 digits from 0 to 9. What is the maximum number of citizens who can be designated with these codes?
Pick one:	A) 37(36^4)	B) 36^9	C) 35(36^5)	D) 37(36^5)	E) 35(36^9)
The number of possible 4-digit codes is 36^4.   The number of possible 5-digit codes is 36^5.   The total sum is 36^4 + 36^5 = 36^4(1+36) = 37(36^4)   The answer is 37(36^4).
<result>A</result>
All of the citizens of a country have a four-character or five-character national identification code that is created using the 26 letters of the alphabet and the 10 digits from 0 to 9. What is the maximum number of citizens who can be designated with these codes?