A team is designing a spill-resistant lab beaker lid. Constraints: must allow pouring at 30 mL/s and must not leak when tilted 45 degrees. Test results: - Lid A: pours 35 mL/s, leaks at 45 deg - Lid B: pours 28 mL/s, no leak - Lid C: pours 32 mL/s, no leak