Q1. Consider the signal x(t) shown below. Express x(t) using only basic signal functions, such as u(t), r(t), and ^(t).

Which of the following options correctly represents the expression of x(t)?

A) u(t) + r(t) + ^(t)
B) u(t) - r(t) + ^(t)
C) u(t) + r(t) - ^(t)
D) u(t) - r(t) - ^(t)