Which expression is equivalent to (144k^2r^14)^1/2 for all positive values of k and r?

A. 12kr^7

B. 72k^2r^14

C. 144kr^7

D. 12k^2r^14

12kr^7

Apologies for the confusion, you are correct. The correct expression equivalent to (144k^2r^14)^1/2 is 12kr^7. Thank you for pointing that out.

B. 72k^2r^14