What is a supply shock, according to Douglas Holtz-Eakin? Group of answer choices things which easier it harder to produce goods and services for sale, or less expensive to do so. things which make it harder to produce goods and services for sale, or more expensive to do so. things which make it easier to produce goods and services for sale, or less expensive to do so. things which make it easier to produce goods and services for sale, or more expensive to do so