Regarding membrane linkages, which statement is true?
A、Eukarya have ester linkages; Bacteria have ether linkages.
B、Bacteria have ester linkages; Archaea have ether linkages. 
C、Bacteria and Eukarya have ester linkages; Archaea linkages are not yet known.
D、Archaea have ester linkages; Eukarya have ether linkages.