The find unmatched query requires two tables with a common field where one of the tables is missing information

________ data is data duplicated in more than one location within a database

Fill in the blank(s) with correct word

You should use cell references in formulas instead of constant values so

A) you can change the input values without changing the formulas. B) you can easily include letters, numbers, and spaces. C) it is easier to debug the errors. D) you can control the sequence in which Excel performs arithmetic operations.