A man spends \(\dfrac{2}{5}\) of his salary on house rent, \(\dfrac{3}{10}\) of salary on food and \(\dfrac{1}{8}\) of his salary on conveyance. If he has Rs. 1,400 left with him, find his expenditure on food and conveyance.

• A. 3,400
• B. 1,500
• C. 1,250
• D. 2,000