The unit digit in the product 3421*6721*4584*6784 is? Choose the correct choice
A) 0  B) 1  C) 6  D) 3  E) 4
Unit digit in the given product = unit digit in 1*1*4*4 = 6   Answer is 6
<result>C</result>
The unit digit in the product 3421*6721*4584*6784 is?