Which Rh antigen pair would be considered heterozygous expression?

On the Quotient 10 Cell Antibody ID Panel for Sterling Malory Archer all of the following (a-d) are Rare antibodies and can be eliminated except:

If an adult patient is immunosuppressed with a low hemoglobin, which type of unit would be the best choice for them if they needed increased oxygen carrying capacity?

If a donor unit had the following Weak D reactions, what Rh type should the donor unit blood bag be labeled as? Image 69_E3.jpg

There are two substances that must be antigen typed after an unexpected antibody is identified in the recipient, and before the crossmatch can be performed. What are the 2 substances that need to be antigen typed?

How long is the deferral period for an individual that has gotten a diphtheria/tetanus toxoid vaccine?

Which of the following proteins can significantly decrease the concentration of plasma total protein if its concentration is decreased?

2+ agglutination appears as: 

If the Father’s type (phenotype) was AB and the Mother’s type was O, what would be the possible genotypes of their offspring?  (Include A2 subgroups).

Exogenous (dietary) triglycerides are transported in the plasma in what form?