How does the gravitational potential energy of Coaster A compare to Coaster B?

( Coaster A is 30 M tall and Coaster B is 15 M tall )
A. The gravitational potential energy of Coaster A is twice as large as Coaster B
B. The gravitational potential energy of Coaster A is half as large as Coaster B
C. The gravitational potential energy of Coaster A is is 15 times as large as Coaster B
D. The gravitational potential energy of Coaster A is equal to Coaster B

Unit 1 lesson 4

1b
2a
3d
4b
5c
6a
7d
8b
9b
10a

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P.E. = m g h

if h is twice as large , then ...

What’s the answer

1b

2a
3d
4b
5c
6a
7d
8b
9b
10a

1 b

9 b
I got everything else wrong because the people above me lied!!!