You will be given a definition of a task first, then some input of the task.
In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

The moon (A) has seven great lakes (B) is devoid of seas (C) is larger than the Earth (D) has a powerful magnetic field
Output:
B