Which of the statements are true/false in regards to technical chart analysis:

1.) If you want to evaluate the performance of a strategy, you perform a cross-validation.

2.) If you want to evaluate the performance of a strategy, you perform backtesting.

3.) If you want to evaluate the performance of a strategy, you perform a cross-validation using the returns of adjusted prices.

4.) If you want to evaluate the performance of a strategy, you perform a backtest using the returns of adjusted prices.