The array factor of 4- isotropic elements of broadside array is given by ____________

• A. \(\frac{sin(2kdcosθ)}{2kdcosθ} \)
• B. \(\frac{sin(kdcosθ)}{2kdcosθ} \)
• C. \(\frac{sin(2kdcosθ)}{kdcosθ} \)
• D. \(\frac{cos(2kdcosθ)}{2kdcosθ} \)