It costs Rs. p each to send the first thousand messsages and Rs. q to send each subsequent one . If r is greater than 1,000, how many Rupees will it cost to send r messages ?

A) 1000 (r – p) + pq

B) 1000 p + qr

C) 1000 (r – q) + pr

D) 1000(p – q) + qr

View Answer
Option – D.