Arrange the following events in the standard immunization and immune response sequence for Hepatitis B in infants (from vaccine administration to protective immunity): 1. Administration of the birth dose of Hepatitis B vaccine. 2. Administration of the second and third doses as part of the pentavalent vaccine. 3. Presentation of HBsAg (Hepatitis B surface Antigen) by antigen-presenting cells to T-helper cells. 4. Production of protective levels of anti-HBs antibodies by plasma B cells. Select the correct option:

Options:

• A: 2-1-3-4
• B: 1-3-2-4
• C: 3-1-2-4
• D: 1-2-3-4

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