What is the full form of RuBisCO?

• A. Ribosome bisphosphate Carboxylase-Oxidase
• B. Ribulose bisphosphate Carboxylase-Oxidase
• C. Ribosome bisphosphate Carboxy-Oxygenase
• D. Ribulose bisphosphate Carboxylase-Oxygenase