If only structural isomers are counted, how many alcohols of each type have the formula $\text{C}_5\text{H}_{12}\text{O}$?
- Aprimary 3, secondary 3, tertiary 2
- Bprimary 4, secondary 2, tertiary 2
- Cprimary 4, secondary 3, tertiary 1
- Dprimary 5, secondary 2, tertiary 1