which option correctly describes features of aws academy learner lab? A. Long-running sandbox environment for exploring all AWS services, $100 USD per learner budget limit, and 4-hours session timer by default B. 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 C. Long-running sandbox environment for exploring a restricted set of AWS services, no budget limit per learner, and no session timer limit D. Long-running sandbox environment for exploring all AWS services, no budget limit per learner, and adjustable session timer