Answer:
The correct answer is the option (C).
Explanation:
According to Timothy Walters, if price increases by $1 from $6 to $7 then quantity demanded will reduce from 1,200 units to 900 units.
This will lead to decrease in total revenue from (1,200 * $6) $7,200 to (900 * $7) $6,300.
According to Jack Mayers, if price increases by $1 from $6 to $7 then quantity demanded will reduce from 1,200 units to 950 units.
This will lead to decrease in total revenue from (1,200 * $6) $7,200 to (950 * $7) $6,650.
It can be seen that with increase in price, total revenue is decreasing in both cases. This happens when demand is elastic.
So,
Timothy and Jack will most likely to agree that the demand for good A is elastic.
Hence, the correct answer is the option (C).