A list in which the items display in a visual hierarchical structure

Each scroll bar includes a scroll box, which indicates the location in a document

Indicate whether the statement is true or false

Recently, disk capacities have ________, access times have ________ and cost per unit storage has ________.

a) increased, decreased exponentially, decreased exponentially b) increased asymptotically, decreased, stayed the same c) decreased, decreased, decreased d) none of the above