Which statement best describe the difference between a gene and an allele

Aan allele is a section of a gene. A gene is a section of DNA that usually contains the code for a specific trait.

BA gene is one of two or more variants of allele. An allele is a section of chromosome that usually contains the code for a particular protein.

CAn allele is one of two or more variants of a gene. A gene is a section of chromosome that usually contains the code for a particular protein.

DA gene is a section of an allele. An allele is a section of DNA at usually contains the code for a specific protein that determines a specific trait. I need an answer as soon as possible thanks in advance