Structure of nucleic acids and replication of DNA — practice question

Which row shows the correct information for guanine?

• Ahas a double ring structure ✓, is a purine ✓, joins its complementary base with three hydrogen bonds ✓
• Bhas a double ring structure ✓, is a purine ✗, joins its complementary base with three hydrogen bonds ✓
• Chas a double ring structure ✗, is a purine ✓, joins its complementary base with three hydrogen bonds ✗
• Dhas a double ring structure ✗, is a purine ✗, joins its complementary base with three hydrogen bonds ✓