Identify the direction of E (electric field) in the region II (0 < x < 10 cm, along the x-axis). The value of the Coulomb constant is 8.98755 × 10⁹ N·m²/C².
a) Directed along the positive x-axis
b) Directed along the negative x-axis
c) Directed radially outward from the region
d) Directed radially inward towards the region