During the early 19th century which Travancore ruler introduced a system of free and compulsory education under state control with the assistance of Col. Munro ?

During the early 19th century which Travancore ruler introduced a system of free and compulsory education under state control with the assistance of Col. Munro ?
 a) Swati Tirunal
 b) Balaramavarma-I
 c) Ayilyam Tirunal
 d) Rani Gauri Parvati Bai

Rani Gauri Parvati Bai