The value of Kinetic energy $K$ and potential energy $V$ are measured as follows $K=100.0 \pm 2.0\; I \quad V=200.0 \pm 1.0\; I$. What is the percentage error in measurement of mechanical energy ?

Question

$$(a)\;2.5 \% \quad (b)\;1 \%\quad (c)\;0.5 \%\quad (d)\;1.5 \%$$