If cos x = sin y and $$cot (x — 40^\circ)$$ = tan $$(50^\circ —y)$$, then the values of x and y are

A

$$70^\circ,20^\circ$$

B

$$85^\circ,5^\circ$$

C

$$80^\circ,10^\circ$$

D

$$60^\circ,30^\circ$$