What is a key disadvantage of using Grid Search for hyperparameter tuning?

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What is a key disadvantage of using Grid Search for hyperparameter tuning?
A . It is too quick and may miss out on evaluating some hyperparameters
B . It requires no prior knowledge of the hyperparameters
C . It can be computationally expensive and time-consuming due to its exhaustive nature
D . It is unable to handle discrete parameters

Answer: C