A. Central incisors
B. Mandibular first molar
C. Mandibular second molar
D. Canines

A. 4th month of life
B. 4th month in utero
C. 41/2 month in utero
D. 5th month in utero

A. Premolars, incisors and 1st molars
B. Canine and 2nd molars
C. Canines, premolars and2^ndmolars
D. Incisors and 1st molars

A. 8 months
B. 18 months
C. 8 years
D. 16 years

A. 3 years
B. 1 years
C. 2 years
D. 1 month

A. 2 years
B. 4 years
C. 6 years
D. 8 years

A. One year
B. Two years
C. Three years
D. Four years

A. 4 months in utere
B. Birth
C. 4 months after birth
D. One year after birth

A. 6 EDC21/ 6EDC21
B. 6EDCBA/ 6EDC21
C. EDC21/EDC21
D. 76EDC21/ 7EDC21

A. 20
B. 22
C. 24
D. 30