Which option correctly describes features of AWS Academy Learner Lab?

Long$-$running sandbox environment for exploring all AWS services, no budget limit per learner, and adjustable session timer

Long$-$running sandbox environment for exploring all AWS services, $$100$ USD per learner budget limit$,$ and $4-$hour session timer by default

Long$-$running sandbox environment for exploring a restricted set of AWS services, $$100$ USD per learner budget limit$,$ and $4-$hour session timer by default

Long$-$running sandbox environment for exploring a restricted set of AWS services, no budget limit per learner, and no session timer limit