When "bell-bottom" pants became fashionable in the 1970s, the demand curve for bell-bottoms

The demand curve for bell-bottoms __shifted to the right__ its the simple answer, but besides that, it can be said that the demand for these pants, which had been used by the navy for a long time, quickly became fashionable among hippies, first used by women and then by men, until singers and artists began to use the bell bottoms and their popularity grew so much that they have become a symbol of disco nights in the 70s.

The answer is option b and c.