Which statement is true about the transitions because and as a result in the following sentences

Question

Amir reached his saving goal because he worked hard at his new job all summer. As a result, he was able to buy the new skates he wanted.

A. *Because* signals a cause and *as* a result signals an effect.
B. Both *because* and *as* a result signal an effect
C. *Because* signals an effect an *as* a result signals a cause
D. Both *because* and *as* a result a cause

Answer 1

A. *Because* signals a cause and *as a result* signals an effect.