In which sentence is symbiotic used correctly?

A. Barnacles and whales have a symbiotic relationship; barnacles attach themselves to whales for a
safe place to live and transportation to food sources, and whales benefit from the protective,
spiny barrier that barnacles provide.

B. The software company introduced a symbiotic app that allows users to track every calorie
consumed or spent throughout the day.

C. The rivalry between the two teams is symbiotic, players from both sides regularly engage in
verbal and even physical altercations and spectators can count on witnessing some sort of drama
whenever the teams play together.

D. Emile's symbiotic nature is demonstrated by the countless hours he puts into volunteering at the
youth center coaching sports and tutoring students in math.

Symbiotic relationship means when two different organisms interact physically and one of them is at least benefited due to that interaction, such that having an interdependent relationship with others.The first statement clearly explains the meaning of the symbiotic relationship that takes place between Barnacles and Whales.

These barnacles attach themselves to whales and both the animals are benefited from each other. The whales seek help from barnacles by the means of food resources and also they took shelter from the protective spin barriers of the barnacles. In other options, symbiotic is not mentioned properly.