Using the Genetic Code,predict What Type of Mutation Has Occurred

Multiple Choice

Using the genetic code,predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele.
Normal allele GGAAUGAAACAGGAACCC
Mutant allele GGAAUGAAACAGGUACCC

A) a point mutation,Val to Glu
B) a frame shift
C) addition of a new stop codon
D) a point mutation,Glu to Val