Haya Noticed That Male College Students Needed to Dress Up

Haya noticed that male college students needed to dress up for presentations but never seemed to have any ties, or at least not very nice ones. She decided she was going to set up a tie store on her campus and offer sports-themed ties as well as solid-coloured ties in her school colours. She can put an announcement on the school's monitors that would display in the dining halls and student union. Haya orders 40 ties in each of the school colours and 10 in each of four sports. She almost instantly sold out of all the sport themed ties. She decides to approach each of the sports teams on campus to see if they would be willing to buy ties "in bulk." Which of the following is true about Haya's supply chain?

A) Haya is using a push model.
B) Haya is using a pull model.
C) Haya is experiencing the bullwhip effect.
D) Haya has an accurate demand forecast.
E) None of these are true.