The diagram shows triangle AOB, where O is the origin and point C lies on the straight line AB, divided by BC: CA = 2:3. M is the midpoint of the straight line OA. Determine:
A. Point M and Point C [3 marks]
B. Straight line equation of CM [3 marks]
C. Distance of CM [1 mark]
D. Area of quadrilateral OMCB [3 marks]