Given below is the construction to draw a circle whose radius is 4 cm with center O and diameter POQ and through P or Q to draw a tangent to the circle. Which step is wrong in the construction ? Step 1 :Taking O as circle as center and radius equal to 4 cm draw a circle. Step 2: Draw diameter of POQ Step 3 : Construct $\angle PQT =45^{\circ}$ Step 4 : Produce TQ to T' obtain the required tangent TQT'

Question

$\begin{array}{1 1}\text {Step 4 only}\\ \text {Step 3 only} \\\text {Step 3 and 4} \\\text{None of the above} \end{array}$