In a MRP problem, A is a MPS item. Every A requires $3$ B$\text{'}$s and $2$ C$\text{'}$s$.$ Every B requires $5$ C$\text{'}$s$.$ All lead times are one period. Initial inventory values for all items are $0.$ Use lot$-$

for$-$lot method for order quantities for all items. If gross requirement for $A$ is $400$ in period $10,$ what will be the planned order release for $C$ in period $8?$

Multiple Choice

$1,600$

$6,800$

$6,000$

$1,200$

$8$