<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A pathologist performed an autopsy on an 18-month-old infant boy who died of pneumonia. Clinical notes revealed the infant had repeated respiratory infections that started after he was weaned off of breast-milk. Laboratory investigation revealed hypogammaglobulinemia and an absence of B-cells. T-cell levels were normal. Histological evaluation of an axillary lymph node revealed an absence of germinal centers. Which of the following is the mode of inheritance of the disorder that afflicted this infant?? A: Autosomal recessive, B: Autosomal dominant, C: X-linked recessive, D: X-linked dominant, E: Mitochondrial inheritance,  <response>: This question describes a case of an infant boy with recurrent respiratory infections, hypogammaglobulinemia, absence of B cells, normal T cells, and lack of germinal centers in lymph nodes. This clinical presentation is most consistent with X-linked agammaglobulinemia XLA, which is caused by mutations in the BTK gene on the X chromosome. XLA is characterized by impaired B cell development and decreased immunoglobulin production, leading to recurrent infections. The X-linked recessive inheritance means males are typically affected while female carriers are asymptomatic due to X-inactivation. The lack of germinal centers further supports impaired B cell function.C: X-linked recessive 