Based on the information provided, Quincy has type B blood. To have type B blood, an individual must have at least one allele for the B antigen. The possible allele combinations for Quincy could be 2. IBi or 3. IBIB. Option 1 (IAi) and option 4 (IAIB) are not possible because they would result in either type A or type AB blood. Option 5 (ii) would result in type O blood, which is not compatible with Quincy having type B blood.
