Polystyrene Containers So, If A Polystyrene Has A Glass Transition Temperature Of 100 Degrees Celsius...?

So, if a polystyrene has a glass transition temperature of 100 degrees Celsius...? - polystyrene containers

... If
one styrofoam container with water inside, in the car and later found its distorted shape, we can conclude that:

A: The temperature in the car fell to below 100 degrees Celsius for
long period.
B: the temperature in the car over 100 degrees Celsius
long period.
C: The liquid in the tank was frozen
D: the liquid in the cup cooked vegetables