Contracting: You issued a solicitation for $100$ high$-$end, commercial off$-$the$-$shelf computers estimated at $$230,000.$ Later that day, the customer informs you the quantity of computers needed has increased from $100$ to $110.$ What should you do$?$

$(2$ Points$)$

a$)$ Mention the change in a pre$-$bid conference.

b$)$ Proceed with receipt of offers, then issue a new solicitation for the additional computers

c$)$ Issue an amendment to the solicitation

d$)$ Issue a modification to the solicitation