The right answer is:

1. Ether
2. Gas Price * Gas Cost even if when you set a transaction you set the gas price and the gas limit, which is the maximum gas that you are willing to spend
3. Wei

The reward of this post was 0.940 SBD.

There are no BEST answer because there is no answer with an explanation of things in the answer.

The first user that has answered correctly was @attalis therefore his reward is:

10% as the first user that has answered correctly = 0.094

• 15% because there are no best answer = 0.141
  total = 0.235

The other 25% = 0.235 for upvotes on the best answer goes to @steferretto because he is the only that has upvoted the first correct answer.

Thank you all for participating and for your contributions.