A manufacturer buys three products $(A,B,$ and C$)$ from $3$ separate $$uppliers$.$ The annual demand of $A,B$ and $C$ is $1,200$ units, $120$ units and $12,000$

units respectively. If the cost of placing a purchase order is Rs $3,000,$ a$)$ what is the optimal order size, b$)$ cycle inventory, c$)$ annual holding costs,

d$)$ annual ordering costs, and e$)$ average flow time? The purchase price of all three products is the same$-$ Rs $500/$unit$.$ Use annual holding cost as

$10\%$ of product price. Present the final results in a table.