A product costs the manufacturer ₹20 per unit. The demand function is given by $p(x) = 1000 - 20x$, then the quantity for maximum profit is:

25 units 50 units 49 units $\frac{49}{2}$ units

$\frac{49}{2}$ units

The correct answer is Option (4) - $\frac{49}{2}$ units