You Come Across an Article on Alien Nucleic Acid Structure

You come across an article on alien nucleic acid structure.The article states that researchers have discovered a new single-ring nucleotide.Based on your knowledge of nucleic acids here on Earth,which of the following characteristics might apply to this new nucleotide? Select all that apply.

A) The new nucleotide is probably a purine.
B) The new nucleotide is probably a pyramidine.
C) The new nucleotide may be similar to cytosine.
D) The new nucleotide may be similar to guanine.
E) The new nucleotide may be similar to uracil.