Which of the Following Statements CORRECTLY Describes the Concept of Alternative

Which of the following statements CORRECTLY describes the concept of alternative splicing?

A) Eukaryotic gene and protein sequences are precisely colinear.
B) With the rare exception of RNA editing, every nucleotide contained in a processed mRNA molecule is derived from exon sequences.
C) Every other intron is removed in an alternate manner to generate a functional mRNA transcript.
D) Only a subset of the same mRNA transcripts is specifically selected for splicing in the nucleus.
E) Multiple protein products are often produced from single eukaryotic genes.