The critical path for the project activities shown below is ________ with duration ________.

Activity	Activity Time (in weeks)	Immediate Predecessor(s)
A	8	---
B	5	---
C	3	---
D	6	A, C
E	2	B
F	4	D, E

Group of answer choices

A-C-D-F; 21 weeks

B-E-F; 11 weeks

A-B-E-F; 19 weeks

C-D-F; 13 weeks

A-B-D; 19 weeks

A-D-F; 18 weeks