The correct answer for this question is c
Not enough info, its part c of a question that has more to go off of
B) Rotterdam. Because sea level is 0 and Rotterdam is the only one below sea level
Volume of cylinder = πr²h = π x 4² x 6 = 96π
volume of cone = 1/3πR²H = 1/3π x 8² x 12 = 256π
You can see that volume of cone is more than twice of volume of cylinder. So she is not correct