nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.train.115710

The task

What is the lock-in effect mentioned in the text? A. Workers can easily switch platforms without losing their reputation. B. Workers are locked-in on specific platforms, having to choose between building reputational credit over possibly better working conditions or higher pay. C. Workers can simultaneously work on multiple platforms with portable profiles. D. Workers have equal bargaining power over wages and working conditions. Return only the single uppercase letter of the correct option.