Choose the Correct Answer from the List Below

Choose the correct answer from the list below. Not all of the answers will be used.
-A change, other than splicing, made to the base sequence of RNA following transcription is called ______________.

A) poly(A) tail
B) methylation
C) alternative splicing
D) spliceosome
E) U2 and U6
F) U4, U5, and U6
G) spliced
H) translation
I) RNA editing
J) GU
K) ribozyme
L) RNA polymerase I
M) ATP