Which of the followings are correct about chronic myeloid leukemia?

A It is common in young adults and children.

B It typically takes a biphasic chronic and acute course.

C Pseudo-Gaucher cells are present in the bone marrow.

D Immunohistochemistry for terminal deoxynucleotidyl transferase is a helpful way to confirm the diagnosis.

E Immunohistochemistry for tryptase is a helpful way to confirm the diagnosis.