Using the information given, calculate the replenishment time when no beginning inventory exists.

Component Immediate Parent Leed Time (weeks)

A - 4

B A 2

C A 4

D A 4

E A 4

F B 2

G B 1

H D 3

I D 3

J E 8

K E 1

L E 2

M F 4

N F 4

O H 4

P K 4

Q K 1

A

B C D E

F G H I J K L

M N O P Q

The cumulative lead time, the longest planned length of time to complete the end product, is ???? weeks.