A. AB-
B. O-
C. O+
D. none
Parent Blood Type Estimate Table:
| Child’s Blood Type | |||||
| A | B | AB | O | ||
| One Parent’s Blood Type |
|||||
| A | A/B/AB/O | B/AB | B/AB | A/B/O | |
| B | A/AB/O | A/B/AB/O | A/AB | A/B/O | |
| AB | A/B/AB/O | A/B/AB/O | A/B/AB | Impossible | |
| O | A/AB | B/AB | Impossible | A/B/O | |
A. AB-
B. O-
C. O+
D. none
Parent Blood Type Estimate Table:
| Child’s Blood Type | |||||
| A | B | AB | O | ||
| One Parent’s Blood Type |
|||||
| A | A/B/AB/O | B/AB | B/AB | A/B/O | |
| B | A/AB/O | A/B/AB/O | A/AB | A/B/O | |
| AB | A/B/AB/O | A/B/AB/O | A/B/AB | Impossible | |
| O | A/AB | B/AB | Impossible | A/B/O | |