Assertion (A) : Ridge Lines in isoquant map set the limits for the positive productivities of the respective inputs used in the production process.
Reasoning (R) : Isoquants will slope positively if the use of an input is increased beyond the limit set by the ridge lines.
Both (A) and (R) are correct and (R) is correct explanation of (A)
Both (A) and (R) are correct but (R) is not correct explanation of (A)
(A) is correct but (R) is not correct
(A) is not correct but (R) is correct