Angela is 4 cm taller than Helen. Helen is 3 cm taller than Amy. If Amy is 150 cm tall, how many centimeters tall is Angela? Give me reasons, before answering the question

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Amy’s height is 150 cm. Being 3 cm taller than Amy, Helen’s height is 150 + 3 = 153 cm. Being 4 cm taller than Helen, Angela’s height is 153 + 4 = 157 cm. So the final answer is 157.