A type 1 chain has: a. The terminal galactose in a 1-3 linkage to subterminal N-acetylglucosamine. b. The terminal galactose in a 1-4 linkage to subterminal N-acetylglucosamine. c. The terminal galactose in a 1-3 linkage to subterminal N-acetylgalactosamine. d. The terminal galactose in a 1-4 linkage to subterminal N-acetylgalactosamine.