Please answer the following $($Do not use AI to find answers I need expert help in Supply chain$/$operations management$)$

$1.$ Which factors will reduce queue size when the demand is random and continues to be stable over the life span of the product? Also, the lead time is constant? $($select all that apply$)$

A$.$ Sell the capacity

B$.$ Increase the reorder point $($R$)$

C$.$ Add more capacity

D$.$ Decrease the order quantity $($Q$)$

$2.$ When Littlefield technologies orders $60$ kits from its supplier, how many dollars are deducted from Littlefield technologies cash? $($Hint: Fixed cost is $$1000$ per order and variable cost is $$10$ per kit$)$

A$.$ $$1600$

B$.$ $$10010$

C$.$ $$60,000$

D$.$ $$100$

$3.$ If a contract paying $$1,000$ per order with a quoted lead time of $24$ hours and a maximum lead time of $72$ hours is delivered in $48$ hours. What is the revenue earned per order? Enter the answer without the $ sign.