"For ensuring safety on the roads and for extending comforts to the travellers, he built sarais on the highway at a distance of two Kosh. The travellers could get beds and cooked food. There also was provision for uncooked food supplies. He built some 1700 such sarais. "Who is this ruler?

• A. Ibrahim Lodi
• B. Shar Shah
• C. Akbar
• D. Shah Jahan