7. Acknowledgment

Without the help of our friends and families/relatives, we could not have data for our research. We would also like to thank the teachers, Miss Shireen and Miss Mohan, we would not have any guidance for our research and it would not be able to be carried out. Most importantly, without the members of the group, Deuterium, who are Wun Juan, Shaquille and Ibrahim, the whole research will not be a success.