Unit: Trigonometric equations and identities Unit test Sara and Arabella are on two swings of a swing set. The function S [ ( ) represents Sara's height. in meters. from the ground { seconds after a bell rings. Likewise. (() represents Arabella's height from the ground t seconds after the bell rings. S(t) = 1.4 + sin (3t - 1.5)) A(t) = 1.4 + 0.7 sin (2.5/ - 1) Consider the following equation: 1.4 + sin (3t - 1.5)) - 1.4 + 0.7 sin (2.5t - 1) What does the least positive solution for the last equation represent? Choose 1 answer. A The combined height above the ground of Sara and Arabella 1.4 seconds after the bell B The set of all,numbers of seconds after the bell when Sara and Arabella are the same height from the ground C The difference in height above the ground of Sara and Arabella 1/4 seconds after the bell D The number of seconds after the bell when Sara and Arabella first are the same height from the ground 2of 9 050poo 9 5