Which $of$ the following $is$ something that the plaintiff must prove $in$ order for $an$ accountant $tobe$ liable for damages under Section $10(b)$ and Rule $10b-5of$ the Securities Exchange Act $of1934?$

Multiple Choice

The accountant was ordinarily negligent.

There was a material omission.

The security involved was stock.

The security was part $ofan$ original issuance.