Which of these is an opinion?

A.Lily Born created an untippable cup after watching her grandfather struggle to hold a cup.
B.Robert Nay made the Bubble Ball game that went on to become one of the most popular apps.
C.More people are wearing bow ties these days because they look so much better than regular ties.
D.Mikaila Ulmer gives part of the profits from her company to help save honeybees.