Errors in Measurement – Combination of Errors

2019 1 question

1. In an experiment, the percentage of error occurred in the measurment of physical quantities $A$, $B$, $C$ and $D$ are 1%, 2%, 3% and 4% respectively. Then the maximum percentage of error in the measurement $X$, where $X=\frac{A^2B^{1/2}}{C^{1/3}D^3}$, will be: