The main advantage of using Linux is its General Public License (GPL), which makes the OS free to install and use.?

The following pseudocode

``` IF AVG > 93 THEN GRADE = “A” (ELSE) ENDIF ``` represents a a) sequential IFTHENELSE pattern b) nested IFTHENELSE pattern c) null IFTHENELSE pattern d) simple IFTHENELSE pattern

Which term refers to mathematical and statistical operations you apply to records that meet a query’s selection criteria?

A. Logical operators B. Comparison operators C. Wildcard characters D. Aggregate functions