With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The weather in Southern California is such that the temperature occasionally drops below 54°F in winter, thus, sun-loving crops like pistachios, kiwifruit, avocadoes, strawberries, and tomatoes are not staple crops of the region, and are usually killed off during the winter when it gets cold. Tomatoes are often dried in the sun and a feature of salads and sandwiches grow consistently there in summer only.
text_B: Do farmers in Southern California usually need to spend a lot of money frost proofing Pistachios in Winter?
YES.