What is the unit’s digit of 7^8?  Choose the correct choice from the following options:
A) 1  B) 2  C) 3  D) 4  E) 5
7^1=7   7^2=49   7^3=343   7^4=1(last digit)   7^5=7(last digit) and the cycle repeats after every 4 powers   Therefore, last digit of 7^8=1   1nswer 1
<result>A</result>
What is the unit’s digit of 7^8?