PLEASE HELP FOR 20 POINTS AND A BRAINLIEST THIS IS IMPORTANT (NO SPAMMING, GUESSING OR LINKS) When conducting research, there are two types of sources. Name the two types of sources and give one example for each.

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.