The formula $$ \int_{x0}^{xn} y(n) dx \simeq h/2 (y_0 + 2y_1 + ..... + 2y_{n - 1} + y_n) -h/12 ( \triangledown y_n - \triangle y_0) -h/24 (\triangledown^2 y_n + \triangle^2 y_0) -19h/720 (\triangledown^3 y_n - \triangle^3 y_0) $$ ....... is called

A

Simpson rule

B

Trapezoidal rule

C

Romberg’s rule

D

Gregory’s formula