(A) It is a SNP: TRUE. A missense variant is a single nucleotide polymorphism (SNP), as it involves a change in one nucleotide, leading to an amino acid change.

(C) It results in a change in amino acid sequence: TRUE. A missense mutation changes one amino acid in the protein sequence.

Explanation for incorrect options:

(B) It is likely to cause muscular dystrophy: FALSE. Given that 30% of Europeans carry this variant, it is likely a common polymorphism, not a rare, disease-causing mutation.

(D) It is a deletion: FALSE. A missense variant is a single nucleotide change, not a deletion.

(E) It is a mutation: FALSE. While a missense variant is technically a mutation, it's a common polymorphism, not a rare variant associated with disease.

Learn: Genetics of Common Disease (Genomics)