DIRECTIONS for Questions: Each Question is followed by two statements, A and B. Answer each question using the following instructions:

Choose Option 1  if the question can be answered by using one of the statements alone but not by using the other statement alone. 
Choose Option 2  if the question can be answered by using either of the statement alone. 
Choose Option 3  if the question can be answered by using both statements together but not by either statement alone. 
Choose Option 4  if the question cannot be answered on the basis of the two statements.

Tarak is standing 2 steps to the left of the red mark and 3 steps to the right of a blue mark. He tosses a coin. If it comes up heads, he moves one step towards the right; otherwise he moves one step towards the left. He keeps doing this until he reaches one of the two marks, and then he stops. At which mark does he stop? 

A:  He stops after 21 coin tosses. 
B:  He obtains three more tails than heads