In the given figure, PQR is a triangle and quadrilateral ABCD is inscribed in it. QD = 2 cm, QC = 5 cm, CR = 3 cm. BR = 4 cm. PB = 6 cm. PA = 5 cm and AD = 3 cm. What is the area (in $$cm^2$$) of the quadrilateral ABCD?

A

$$\frac{(23\surd21)}{4}$$

B

$$\frac{(15\surd21)}{4}$$

C

$$\frac{(17\surd21)}{5}$$

D

$$\frac{(23\surd21)}{5}$$