11 (1 point) Which one describes best about model validation and model testing? Question 11 options: Both model validation and testing are ways to measure the model performance, only one is needed. Validation is used to help tune the model using a validation set while testing is used to evaluate the model performance using an independent set If the training data is small, there is no need to have an independent test set, the valuation step can be used to evaluate the model performance Once the validation step is done, the validation set is combined with the test set to assess the overall performance of the model