This isn't always the case and there is no reason it should be .Whether or not a trait is common has to do with how many copies of that gene version (or allele) are in the population. It has little or nothing to do with whether the trait is dominant or recessive. Let's take eye color as an example.
B. sulfur tetrafluoride + water → hydrogen fluoride + sulfur dioxide
The answer should be B, prokaryotic cells use binary fission as a means of "reproduction"
The child is administered to use Intravenous immunoglobulin and Pneumocystis caranii pneumonia or PCP prophylaxis. These are used to improve humoral immunity in the child until the time when the transplant is performed.
The child is not recommended to use influenza vaccine in immunodeficiency disease reason being the possibility of acquiring influenza which is severe.
Again the child is not recommended to use varicella vaccine because it can lead to a risk of acquiring chicken pox.
For a child with PCP, we use Dapsone.