The diagram depicts two pieces of wood floating in shallow water of uniform depth. As shown, straight wavefronts that are parallel to one another are moving towards the pieces of wood. The space between the pieces of wood is $2.0\ \text{cm}$ wide. The wavefronts are $3.0\ \text{cm}$ apart. What will the wavefronts look like after they travel through the gap?
- Asemicircular and $2.0\ \text{cm}$ apart
- Bsemicircular and $3.0\ \text{cm}$ apart
- Cstraight and $2.0\ \text{cm}$ apart
- Dstraight and $3.0\ \text{cm}$ apart