12
13
14
15
A. 12
15
14
20
22
36
40
41
48
8:7
6:3
3:6
9:5
18
15
25
20
22 years
20 years
21 years
24 years
24
18
16
12
12
13
14
15
35 years
47 years
40 years
45 years
39
37
41
35
40
35
25
30
13
10
18
15
45
42
40
44
10 years
14 years
16 years
12 years
15 years
12 years
19 years
17 years
38
40
41
30
30
25
20
15
11:54
11:51
11:50
11:53
10
8
4
None
5
10
15
20