Bio question about bacteria and archaea, need help please.

Which of the following characteristics of the Archaea is also true of Bacteria?
Choose one answer.
a. Cell walls lack peptidoglycan.
b. Include chemoautotrophs and chemoheterotrophs.
c. Histones are present, and are very similar to those of eukaryotes.
d. Membrane lipids are branched and contain ether linkages.

I believe that b. Include chemoautotrophs and chemoheterotrophs would have to be the correct response.

a. is incorrect since bacterial cell walls do contain peptidoglycan.
c. is incorrect since bacteria do not contain histones.
d. is incorrect because I don't believe that bacterial membrane lipids contain ether linkages.