John 用 PyTorch 实现了一个包含全连接层和 CNN 层的网络结构,代码如下,以下描述正确的是哪个选项?
```python
conv1 = nn.Conv2d(3, 16, 3, stride=2, padding=0)
pool = nn.MaxPool2d(2, stride=2, padding=0)
fc1 = nn.Linear(3288, 128)
fc2 = nn.Linear(128, 10)
x = torch.randn(1, 3, 32, 32)
y = pool(F.relu(fc1(x)))
z = fc2(x)