New technology has made most of the jobs workers do at a particular factory obsolete, and they are laid off. Which type of unemployment are they experiencing?

Question

A.) Structural
B.) Casual
C.) Frictional
D.) Cyclical *
Can someone check this?

Answer 1

Also this one:
Which type of investment are stocks?
A.) Lending
B.) Ownership
C.) Cash equivalent
D.) Interest *

Answer 2

Neither answer is correct.