You are given a science question (hard-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.

The average distance between Earth and the Sun is 149,600,000 kilometers. Which of the following is the correct scientific notation for this distance?  
 (A) 1.496 x 10^3 km (B) 1496 x 10^5 (C) 149.6 x 10^6 km (D) 1.496 x 10^8 km
D