Let $x$ be the sum of the first 30 consecutive positive even integer and $y$ be the sum of the first 30 consecutive positive integer . What is x in term of $y$ ?$x=2+4+6+....60,y=1+2+3+.....+30$

Question

$\begin{array}{1 1} (a)\;x=2y^2 \\ (b)\;x=y^2 \\ (c)\;x=2y \\(d)\;x^2=y \end{array}$