Determine which of the following sequences is arithmetic. If the sequence is arithmetic, determine the first term a, an 2, 4, 6, 8, 10, ...
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
and common difference
O A. The sequence is arithmetic with first term
(Type an exact answer.)
OB. The sequence is not arithmetic.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?