Which expression is equivalent to the given expression?

−(1/2y+1/4)−(1/2y+1/4)

−1/4(1+2y)−1/4(1+2y)

1/4(2y−1) 1/4(2y−1)

−2(1/4y−1/8)−2(1/4y−1/8)

2(1/8−1/4y)