How would hydraulic power steering be affected if an engine stalled in slow-moving traffic?

The steering fluid reservoir would lose all its fluid.
The steering wheel would automatically lock.
The steering would become heavy and difficult to operate.
The steering would become much lighter and easier to operate.

Explantion: Hydraulic power steering is operated by a pump which is driven by the engine. If the engine stalls, the pump stops working, and the steering becomes heavy and requires much more effort to turn.

Theory Tester

How would hydraulic power steering be affected if an engine stalled in slow-moving traffic?

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