Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Pick # | CFL Team | Player | Position | College |
| --- | --- | --- | --- | --- |
| 29.0 | Hamilton | Jeff Brown | CB | Acadia |
| 30.0 | B.C. | Bernard Gravel | DB | Laval |
| 31.0 | B.C. | Francesco Pepe-Esposito | LB | Laval |
| 32.0 | Calgary | Gene Stahl | RB | Calgary |
| 33.0 | Edmonton | James Cooper | OL | British Columbia |
| 34.0 | Montreal | Daniel Lafontaine | OL | McGill |
Question:
Which positions had players from Laval college
Answer:
DB, LB