Which of the following option is correct?
There are four students in a group. After measuring the weight of the students, found the following result.
| Student's name | Weight |
| Rakib | 67.65 kg |
| Sneha | 69.42 kg |
| Utpal | 66.58 kg |
| Manju | 84.35 kg |
S1: The average weight of all students is 70 kg.
S2: The sum of the weight of Rakib and Manju is 16000 grams more than the sum of the weight of Sneha and Utpal.
1
Only S1 is correct
2
Only S2 is correct
3
Both S1 and S2 are correct
4
Both S1 and S2 are not correct