Option (B) is incorrect because the agricultural marketing system primarily includes:
Assembling: Collection of produce from farms.
Storage and Transportation: Safeguarding and moving produce to markets.
Processing: Converting raw produce into finished goods.
Grading and Packaging: Preparing produce for sale.
Distribution: Delivering goods to consumers or retailers.
Option (B) incorrectly includes Production, which is a part of the agricultural sector but not of the marketing system. Marketing begins only after production is completed.
Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.
Study the given molecular structure of double-stranded polynucleotide chain of DNA and answer the questions that follow. 
(a) How many phosphodiester bonds are present in the given double-stranded polynucleotide chain?
(b) How many base pairs are there in each helical turn of double helix structure of DNA? Also write the distance between a base pair in a helix.
(c) In addition to H-bonds, what confers additional stability to the helical structure of DNA?