As per given by the question,
There are given that the triangle.
Now,
According to the theorem, the triangle proportinality theorem states that if a lines is parallel to one side of the triangle and it it intersects the other two side, then it divides those side proportinality.
So,
In this case, line TU is parallel to the QS.
So,
the ratio c:d and a:b are equal to the
Hence, the option B is correct.