Answer:
C. No. It would imply that adding more of both inputs keeps output constant.
Explanation:
Isoquant is an indifference curve from the manufacturers point of view, basically it is a curve which represents the combinations of two inputs providing same output.
It is basic that if quantity of one input is increased the other will decrease, to have the same quantity of output at various combinations.
Thus, in case if the quantity of both the inputs increase then the output will automatically increase.
And in that case only the slope will be upward which is impossible.
