C. Seismic energy
This is energy that is released in earthquakes.
Answer:
The ratio of electric field is 16:9.
Explanation:
Given that,
Radius 
Charge = Q
We know that,
The electric field is directly proportional to the charge and inversely proportional to the square of the distance.
In mathematically term,

Here, 
We need to calculate the ratio of electric field
Using formula of electric field

Put the value into the formula

Hence, The ratio of electric field is 16:9.