Pick from:
(1). No.
(2). Yes.
Q: Question: what are the sulfas? Would "It is important to make a distinction between sulfa drugs and other sulfur-containing drugs and additives, such as sulfates and sulfites, which are chemically unrelated to the sulfonamide group, and do not cause the same hypersensitivity reactions seen in the sulfonamides." be a reasonable answer?
A:
(1).