Explain how looking at a line can tell us whether its slope is negative, positive, undefined, or zero. Choose the correct answer below.
O A. A line with a negative slope decreases from left to right, while a line with a positive slope increases from left to right. A line with a slope of zero is a vertical line, and a line with undefined slope is a horizontal line.
O B. A line with a negative slope increases from left to right, while a line with a positive slope decreases from left to right. A line with a slope of zero is a horizontal line, and a line with undefined slope is a vertical line
OC. A line with a negative slope increases from left to right, while a line with a positive slope decreases from left to right. A line with a slope of zero is a vertical line, and a line with horizontal slope is a vertical line
OD. A line with a negative slope decreases from left to right, while a line with a positive slope increases from left to right. A line with a slope of zero is a horizontal line, and a line with undefined slope is a vertical line