Consider the following statements regarding mechanisms of carbon pricing:

1. An emissions tax imposes a charge based on the total greenhouse gas emissions, calculated from the carbon content of fuels consumed.

2. A cap-and-trade system establishes an emissions ceiling, allowing entities to buy and sell emission permits in a carbon market to incentivize reductions.

3. A border tax adjustment imposes a carbon tax on imported goods according to the emissions released during their production to prevent carbon leakage.

Which of the statements given above is/are correct?