What is the tens digit of 6^22?	Choose the most appropriate option:
A) 1 B) 3 C) 5 D) 7 E) 9
The tens digit of 6 in integer power starting from 2 (6^1 has no tens digit) repeats in a pattern of 5: {3, 1, 9, 7, 5}:   The tens digit of 6^2=36 is 3.   The tens digit of 6^3=216 is 1.   The tens digit of 6^4=...96 is 9.   The tens digit of 6^5=...76 is 7.   The tens digit of 6^6=...56 is 5.   The tens digit of 6^7=...36 is 3 again.   etc...   22 has the form 5n+2, so the tens digit of 6^22 is 3.   The answer is 3.
<result>B</result>
What is the tens digit of 6^22?