23) E

We know that the first missing piece (left of the two missing ones) has at least 2 outward curves (OC) and at least 1 inward curve (IC)

The second piece has at least 2 OC and 1 IC.

A is wrong because the first piece has no IC.

If you cannot solve the question by imagination, try cutting out the different pairs (don’t cut A of course as you already know it is wrong) and try using them to fit the black area.

E is the answer.