Classify each of the following situations as either frictional, structural, or cyclical unemployment.
a. Maria has started looking for work after taking time off to have a baby.
b. Juan left high school without graduating and can't find any jobs he is qualified for.
c. Rohit had a job working on Wall Street but lost his job during the financial crisis.
d. Adam has just arrived in a new city and is looking for work.
e. Max wants to work as an air steward, but because the airline industry is heavily unionized there are very few jobs available.
f. Jada has just lost her job in a Web startup that was affected by a downturn in the economy.