Charges of 2

Charges of 2.3 µC and −7 µC are placed at two corners of an equilateral triangle with sides of 0.1 m.At the third corner,what is the electric field magnitude created by these two charges? (k_e = 8.99 × 10⁹ N·m²/C²)
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A) 11.1 × 10⁶ N/C
B) 2.8 × 10⁶ N/C
C) 5 × 10⁶ N/C
D) 5.6 × 10⁶ N/C
E) ​7.4 × 10⁶ N/C