Ingrid participates in beauty pageants. When it's not pageant season, she dresses in baggy jeans and very minimal makeup, but as soon as she knows the beauty pageants will start again, she wears her pearls and buys new, form$-$fitting clothes. She needs to be always ready for the camera and doesn't want her competition to think she will lose. Those who participate in beauty pageants are part of which group that influences Ingrid's buying decisions?

a$.$ Aspirational reference group

b$.$ Secondary membership group

c$.$ Primary membership group

d$.$ Dissociative group