You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Q: Question: If the line L passes through the point (3,n) and (n,3), where n is not equal to 3, which of the following must be true?
1. Line L must passes through the first quadrant
2. Line L does pass the origin
3..The slope of L is negative

 Option A: I only

 Option B: II only

 Option C: III only

 Option D: I and II

 Option E: II and III

A: Option C
****
Q: Question: The wages earned by Robin is 38% more than that earned by Erica. The wages earned by Charles is 60% more than that earned by Erica. How much % is the wages earned by Charles more than that earned by Robin?

 Option A: 23%

 Option B: 27.53%

 Option C: 30%

 Option D: 50%

 Option E: 100%

A: Option B
****
Q: Question: 1370 , 1320 , 1070 , -180 ?

 Option A: -6430

 Option B: -6530

 Option C: -6630

 Option D: -6730

 Option E: -6830

A:
Option A
****