This sentence does not contain any errors in the use of italics or quotation marks.
APeople whose names begin with A and B can come to this line.
BPeople whose names begin with "A" and B can come to this line.
CPeople whose names begin with "A" and "B" can come to this line.
DPeople whose names begin with A and B can come to this line.
APeople whose names begin with A and B can come to this line.
BPeople whose names begin with "A" and B can come to this line.
CPeople whose names begin with "A" and "B" can come to this line.
DPeople whose names begin with A and B can come to this line.