A company spends $$100,000$ on a direct mail piece and increases revenue from $$2,200,000$ to $$2,700,000$ as a result of the mailing. The contribution margin for the company is $15\%.$ What is the company's ROMI for the direct mail campaign; and would you recommend that they proceed with the campaign?

a$.$

$-25\%$; Recommend to proceed with the campaign.

b$.$

$75\%$; Recommend to proceed with the campaign.

c$.$

$-25\%$; Do not recommend to proceed with the campaign.

d$.$

$25\%$; Recommend to proceed with the campaign.

e$.$

$-75\%$; Do not recommend to proceed with the campaign.