Question 15Fill the lines with ‘+’ and ‘×’ to make the equation below correct. 1 __ 1 __ 2 __ 3 __ $4=12$ $1+1+2$×$3+4=12$$1+1+2+3+4=12$$1+1$×2×$3+4=12$$1+1$×2×3×$4=12$