What is the units digit of the expression 14^7−16^4?
Choose the correct choice:  A) 0  B) 3  C) 8  D) 6  E) 4
I think answer on this one should be C too. Since we know that 14^7&gt;16^4, as Will said one should always check if the number is positive.
<result>C</result>
What is the units digit of the expression 14^7−16^4?