What is the hop count that is used by RIP to indicate an unreachable metric?

In the historical data of a company, if the sales are recorded over each week of the company per category and per item, then there is probably:

A) one record. B) multiple field primary key. C) single field primary key. D) one field.

The C statement that would store three integers keyed in by the user in the type int variables n1, n2, and n3 is ________ .

Fill in the blank(s) with the appropriate word(s).