The root tip cells of an onion plant have 8 pairs of chromosomes. Which of the following correctly describes the number of chromosomes in an onion root tip cell at a specific stage of the cell cycle? A. At the end of the synthesis phase, an onion root tip cell will have a total of 32 unique chromosomes.
B. In metaphase, an onion root tip cell will have a total of 16 unique chromosomes composed of 32 chromatids.
C. After cytokinesis, a daughter onion root tip cell will have a total of 8 unique chromosomes.
D. After cytokinesis, a daughter onion root tip cell will have a total of 32 unique chromosomes. Plz answer quickly

You need to figure out at which x-value does the graph has a tangent line slope of -1.remember, the derivative is the slope of the tangent line. so find the derivative function and set it to equal -1 to find the x-value that will have a tangent line slope of 0.differentiate with the chain rule.    set the derivative to equal -1 and solve for x.      take log base 10 of both sides. also recall that  .    so the x-coord of the point of tangency is .the y-coordinate of this point of tangency can be calculated using the original function:     using point-slope form, the equation of the tangent line is      the x-intercept of this tangent line is when the graph is at y=0.    this rounds off to  .choice c.