Which of these sentence contains a subordinate clause? - I WILL MARK U AS THE BRAINLIEST
A)
The goal of both men was to win the election at all costs.
B)
Darkness descended on the countryside, and many stars became visible.
C)
I may seem calm before a performance, but inside I am really quite nervous.
D)
Although Spain ruled the colony for nearly 300 years, Peru won independence in 1826.