Answer:
c. $58,905. 
Step-by-step explanation:
The computation of the sales revenue is shown below:
optimistic scenario revenue = optimistic unit sold × optimistic price 
where, 
optimistic unit sold = 3500 × 110%
= $3,850 
optimistic price = 15 × 102% 
= 15.3 
So, the Optimistic revenue is 
= 3850 × 15.3 
 = $58,905 
Hence, the option c is correct