In the given diagram, we have `A`, `B`, and `C`. We are given that the number of elements in `A` is twice the number of elements in `B`. Let`s analyze each option to find the value of `X`:

Option 1: 78

We don`t have enough information to determine if this is the correct answer. This option is not directly related to the information given in the diagram.

Option 2: 93

According to the given information, the number of elements in `A` is twice the number of elements in `B`. This option does not satisfy that condition, so it is unlikely to be the correct answer.

Option 3: 94

Similar to option 2, this option also does not satisfy the condition that the number of elements in `A` is twice the number of elements in `B`. So, this is unlikely to be the correct answer.

Option 4: 108

Again, this option does not satisfy the condition given in the diagram. Therefore, it is unlikely to be the correct answer.

Based on our analysis, none of the given options appear to match the condition provided in the diagram. Thus, the correct answer cannot be determined from the options given.

Alert - correct