X is a point due east of point Y on a coast Z is another point on the coast but 63km due south of y. If the distance ZX is 12Km. Calculate the bearing of Z from X

A.
240^{o} 
B.
210^{o} 
C.
150^{o} 
D.
60^{o}
X is a point due east of point Y on a coast Z is another point on the coast but 63km due south of y. If the distance ZX is 12Km. Calculate the bearing of Z from X