'Quantum computers might contribute greatly to----- '. In the passage, what does this expression mean?
ক
Currently they arc used extensively in every field.
খ
Their contribution is not as expected.
গ
They are in trial stage, not practically used in all fields yet.
ঘ
Scientists are overwhelmed by their performance.
সঠিক উত্তর: They are in trial stage, not practically used in all fields yet.