Label each of the following descriptions based on the type of missing data being described: missing completely at random (MCAR), missing at random (MAR), or missing not at random (MNAR). - A survey is conducted that asks a sample of people their age, A. MNAR highest level of education completed, and preference of political party. The results indicate that many entries for highest B. MAR level of education completed are missing, and that C. MNAR respondents were more likely to omit this response if they had D. MCAR a high school education or less. Students at a local college are given a survey to collect data on their study habits and preferred learning styles. Students complete the survey by filling out a Scantron form on which they fill in circles to specific multiple-choice questions. Due to Scantron-reading errors, five % of the question responses are not able to be read correctly and so are recorded as missing. A clinical study is being done to judge the efficacy of a new drug in reducing a patient's high blood pressure. Each month study participants must each undergo a stress test where they run on a treadmill at maximum effort for 90 seconds, after which the patient's blood pressure is recorded. However, each patient is screened prior to the stress test and if their resting blood pressure is too high, they do not complete the stress test and the blood pressure reading for that patient is missing. An economic study is conducted asking people to report their profession, job title, and city of residence. Approximately 10% of the responses for job title are missing, and it is observed that men are less likely to provide their job title than women