Which Single-Base Mutation Would Insert a Premature Stop Codon into the Following

Multiple Choice

Which single-base mutation would insert a premature stop codon into the following protein sequence?
N-Met-Gln-Leu-Arg-Cys-C

A) 5′ - AUG CAG AUA GCG UGC UAG - 3′
B) 5′ - AUG AAG UUA GCG UGC UAG - 3′
C) 5′ - AUG CAG UAA GCG UGC UAG - 3′
D) 5′ - AUG CAG UUA UUG UGC UAG - 3′
E) 5′ - AUG CAG UUA GCG UGC AAG - 3′