Here is a goal: how to identify venemous snake in US

Which way makes more sense to accomplish this goal?

Choose your answer from:
(A). 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!.
(B). 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!.
(B).