Which of the Following Statements Is TRUE Regarding a Chromosome

Which of the following statements is TRUE regarding a chromosome deletion?

A) Chromosome deletions do not affect gene dosage.
B) If a deletion eliminates the centromere, the chromosome is still passed on during cell division.
C) Small chromosomal deletions usually have serious and often fatal consequences for an organism.
D) Small chromosomal deletions are easily detected by microscopy.
E) None of the answer options is correct.