A

B

c

D

E

F

G

$H$

X

I

$M$

$N$

The cash flow statement information of the Bray Tyre Company for $20$X$1$ is as follows:

$\backslash$table$[[$Net increase in cash,$ $($a$)],[$Cash received from customers,$60200],[$Receipt from sale of land,$5000],[$Cash$,1$ January $20$X$1,($b$)],[$Net cash used for investing activities,$7800],[$Cash paid to suppliers,$25900],[$Net cash provided by operating activities,$($c$)],[$Cash$,31$ December $20$X$1,\frac{?}{\text{b}\text{a}\text{r}}(11000)$