In the K$-$armed Bandit problem, which of the following statements correctly defines $,($a$),$ and q$()?$

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Group of answer choices

$$ represents the true value of action $$ at time step $,$ represents action $$ at previous time step, and $()$ represents the estimated value of action $.$

$$ represents the estimated value of action $$ at time step $,$ represents the action taken at time step $,$ and $()$ represents the true value of action $.$

$$ represents the action taken at time step $,$ represents the estimated value of action $$ at time step $,$ and $()$ represents the arbitrary action $.$

$$ represents the true value of action $$ at time step $,$ represents the action taken at time step $,$ and $()$ represents the estimated value of action $.$