Concept: Scientific management, associated with F. W. Taylor, emphasizes efficiency, standardization, scientific work methods and monetary incentives.
Step 1: Check Assertion A.
Scientific management assumes that workers are strongly motivated by money and financial rewards.
\[
A = \text{Correct}
\]
Step 2: Check Reason R.
Reason R says that low-wage incentives are provided to increase output. This is incorrect. Scientific management supports proper wage incentives or differential piece-rate incentives, not low-wage incentives.
\[
\text{Correct idea} = \text{Higher incentive for higher efficiency}
\]
Step 3: Choose the correct option.
Assertion A is correct, but Reason R is not correct.
Therefore, the correct answer is option (C).