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.

Question: 3889 + 14.952 - ? = 3854.002

 Option A: 47.95

 Option B: 49.95

 Option C: 45.97

 Option D: 47.59

 Option E: 45.79
Option B

Question: In the xy-plane, line q passes through point (3,-2) and intersect perpendicularly with line n that passes through points (0,3) and (3,5). What is the equation of line q?

 Option A: 3x+2y-5=0

 Option B: 3x+2y+5=0

 Option C: 2x-3y-12=0

 Option D: 2x+3y=0

 Option E: 4x+3y-6=0
Option A

Question: If the simple interest on a certain sum of money for 4 years is one–fifth of the sum, then the rate of interest per annum is

 Option A: 4%

 Option B: 7%

 Option C: 6%

 Option D: 5%

 Option E: 3%

Option D