Let the area of a ΔPQR with vertices P(5, 4), Q(–2, 4) and R(a, b) be 35 square units. If its orthocenter and centroid are O\(\left(2, \frac{14}{5}\right)\) and C(c, d) respectively, then c + 2d is equal to
1
\(\frac{7}{3}\)
2
3
3
2
4
\(\frac{8}{3}\)