Using parentheses in a complex search tells the search engine that _____ _ a. the words inside the parentheses should be treated as a subset in the search b. the part of the search inside the...

a. the words inside the parentheses should be treated as a subset in the search

b. the part of the search inside the parentheses should be performed first

c. the words inside the parentheses should be excluded from the search

d. both a and b