Please choose the correct solution to the question: how to identify venemous snake in US

Solution1: To identify a venomous snake in the U.S., look for varying color patterns, since most solid-colored are harmless. Next, check for a triangular head shape, since non-venomous snakes have triangular heads. If the snake has a rattle on its tail, it is a venomous rattlesnake!

Solution2: To identify a venomous snake in the U.S., look for varying color patterns, since most solid-colored are harmless. Next, check for a triangular head shape, since non-venomous snakes have rounded heads. If the snake has a rattle on its tail, it is a venomous rattlesnake!

Answer format: solution1/solution2
Answer: solution2