Three Positive and Equal Charges Q1, Q2, and Q3 Are

Three positive and equal charges Q1, Q2, and Q3 are at the corners of an equilateral triangle as shown. Point P is at the midpoint of the line between Q1 and Q3. The electric field at P is

A) zero.
B) not zero and is directed along the line from P to Q3.
C) not zero and is directed along the line from P to Q2.
D) not zero and is directed along the line from Q1 to Q2.
E) None of these is correct.