The area (in sq. units) of the region A = {(x, y) ∈ R × R|0 ≤ x ≤3, 0 ≤ y ≤ 4, y ≤ x2 + 3x} is:

• A. \(\frac{{53}}{6}\)
• B. 8
• C. \(\frac{{59}}{6}\)
• D. \(\frac{{26}}{3}\)