Which is a useful approach when a customer cannot define requirements clearly?

When setting custom calculation options in a PivotTable, what does % of Parent Row Total calculate?

A) Displays each value as a percentage of the respective row total. The values in each row total 100% B) Displays each value as a percentage of the respective column total. The values in each column total 100% C) Displays values as: (value for the item) / (value for the parent item on rows) D) Displays each value as a percentage of the grand total

Symbols such as '*' or '?' that can be used to help find uncertain terms in the Find and Replace dialog box are known as:

A) format markers. B) tabs. C) advanced find and replace symbols. D) wild cards.