In the Following Sequences,the Normal Amino Acid Sequence Is Given

In the following sequences,the normal amino acid sequence is given first followed by the sequence that is produced by a sequence alteration.Identify the type of sequence alteration that most likely causes the altered amino acid sequence. Normal Sequence: Phe-Asn-Pro-Thr-Arg
Mutated Sequence: Phe-His-Pro-Thr-Arg
What type of sequence alteration most likely caused the mutation?

A) Indel
B) Missense
C) Nonsense
D) There is no alteration.