Which of the following statements regarding river meanders is/are correct?

1.It is a U-shaped bend in a river.

2.An extremely tight meander is called a gooseneck; it is likely to become a cutoff, or oxbow lake, after a flood.

3.Tectonic uplift can cause a river to continue downcutting along its meandering course, producing incised or entrenched meanders.

Select the correct answer using the code given below:

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