Select the correct answer.
Ali bought shares of an automobile company in January. He bought the shares at $135. In December, Ali is planning to sell his shares. Which graph or graphs indicate that Ali should sell his shares right now?

line chart depicting fluctuating share prices over a year

A.
graph A only
B.
graph B only
C.
graph C only
D.
graphs B and C

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.