What is the name of the Peruvian geographer who wrote the book 'Las Ocho Regiones Naturales del Perú'? Javier Pulgar Vidal was born in Panao, prov...

What is the name of the Peruvian geographer who wrote the book 'Las Ocho Regiones Naturales del Perú'?

Javier Pulgar Vidal was born in Panao, province of Pachitea (Huánuco), in 1911.
Javier Pulgar Vidal was a lawyer and Doctor of Letters.
Javier Pulgar Vidal was a professor and founder of more than 15 universities in Peru and Colombia.
Javier Pulgar Vidal wrote the book 'Las Ocho Regiones Naturales del Perú'.
a) Only statements I and II are true.
b) Only statements II and III are true.
c) Only statements III and IV are true.
d) Only statements I, II, and III are true.
e) All statements are true.