What is the nearest integer of the square root of 3

Which of the following statements is not true? a. parallel lines are lines in the same plane that never intersect. b. congruent figures have the same shape and same size angles and sides. c. similar figures must have the same shape and the same size. d. a rotation is when you turn a figure around a certain point.

A50% increase followed by 33 1/2% decrease

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?