For each set of Cartesian coordinates $(x, y)$, match the equivalent set of Polar coordinates $(r,\theta )$, with $0 \leq \theta \leq \pi$

1. ( 1.5 , 5.8 )
2. ( -6.3 , 2.9 )
3. ( -5.9 , 9.6 )
4. ( 5.8 , 7.5 )

A. $( 9.4810 , 0.9125 )$
B. $( 6.9354 , 2.7102 )$
C. $( 5.9908 , 1.3177 )$
D. $( 11.2681 , 2.1219 )$