By using computers to design and manufacture products, firms are able to :

I think that all the3 first questions are correct

My answer is an option (D) All of the above are correct

Experts are right in the naswers

 d. All of the above are correct. 

a) it will not reduce  Production Cost;  (Production Cost: Raw materials and labor) has noting to do with computer design

b) It will not reduce optimal lot size: ( lot size: A measure or quantity increment acceptable to or specified by the party offering to buy or sell) has noting to do with computer design

c) it will reduce the time required to introduce new products. 

I think it's option D

Thanks

All Of Above All Options Should Be Collect

all of the above are correct...................................

 reduce the time required to introduce new products. 

(D)                 Thank You.

 d. All of the above are correct. .............................................................................