Q: You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
Which procedure correctly describes materials combining?
(A) Salt and sand are added to hot water and stirred making a mixture. (B) Oil and water are placed in a sealed bottle and shaken making a compound. (C) Sugar and water are added to flour and cooked in an oven making an element. (D) Soil and water are shaken in a container and left to separate forming two elements.
A:
A