Which of the Following Processes Is the Best Way to Determine

Which of the following processes is the best way to determine whether alternative splicing of a given gene occurs?

A) Compare the size of the DNA within the given gene and a similar gene in a related organism.
B) Compare the sequences of the given gene and a gene known to undergo alternative splicing.
C) Isolate the primary transcripts made from the given gene and compare the sequences.
D) Isolate mRNA from the given gene and compare the sequences.