Study the following statements.i) Levees are constructed parallel to river flow,ii) Spurs are constructed parallel to river flow,iii) Levees are constructed transverse to river flow,iv) Spurs are constructed transverse to river flow.The correct answer is

• A. (iii) and (iv)
• B. (i) and (ii)
• C. (ii) and (iii)
• D. (i) and (iv)

Answer: (D)