Option b is the correct answer. The Malaw Samvat was also known as the Krit Samvat, which was a type of Hindu calendar system that started in 57 BC. It was initiated by the Malava people to commemorate their victory over the foreign invaders called the Sakas. The Malaw Samvat is also known as the Vikram Samvat, after the legendary king Vikramaditya of Ujjain, who is said to have defeated the Sakas. The Malaw Samvat is still widely used in India, especially in northern and western regions.