Two forces \(4\widehat i + \widehat j - 3\widehat k\) and \(3\widehat i + \widehat j - \widehat k\) are acting on a particle and hence the particle is displaced from the point \(\widehat i + 2\widehat j + 3\widehat k\) to the point \(5\widehat i + 4\widehat j + \widehat k\). The total work done by the forces is equal to:

• A. 20 units
• B. 30 units
• C. 40 units
• D. 50 units