Mikkel is a 45-year-old male with a tenth-grade education. He has been unemployed on numerous occasions and for extended periods of time during his adult life. Mikkel's mother has encouraged him to take classes at the local community college to learn a marketable trade skill, but to no avail. Mikkel is classified as which of the following? Seasonally unemployed Systematically unemployed Cyclically unemployed Hard-core unemployed