To answer this question, you need to understand the concept of group functions in SQL. Group functions are used to perform calculations on groups of rows rather than individual rows in a table.
Let's go through each option to understand why it is correct or incorrect:
Option A) Count - This option is a group function. It is used to count the number of rows that match a specific condition.
Option B) Avg - This option is a group function. It is used to calculate the average value of a column in a group of rows.
Option C) Total - This option is not a standard group function in SQL. The correct group function for calculating the total sum of a column is called "Sum". Therefore, option C is the correct answer to the question.
Option D) Max - This option is a group function. It is used to find the maximum value of a column in a group of rows.
The correct answer is C) Total. This option is not a group function in SQL, whereas the other options (A, B, and D) are valid group functions.