PCA (Prometheus Certified Associate) sample exam question with answer 206

Question:
Which query will return all time series for the metric node_network_transmit_drop_total this is greater than 20 and less than 100?

1. node_network_transmit_drop_total > 20 and node_network_transmit_drop_total < 100
2. node_network_transmit_drop_total > 20 and < 100
3. node_network_transmit_drop_total > 20 or < 100
4. node_network_transmit_drop_total > 20 or node_network_transmit_drop_total < 100

Answer:
A - is the correct expression