Correct Answer:
Option B - In all the years
Total number of mobiles manufactured by company C–1
=(59+65+68)×1000
= 192000
Total number of mobiles manufactured by company C–2
=(62+67+72)×1000
= 201000
Total number of mobiles manufactured by company C–3
=(68+71+74)×1000
= 213000
Total number of mobiles manufactured by company C–4
=(59+62+ 65)×1000
= 186000
Hence company C–4 manufactured the least number of mobiles across all the years.
B. In all the years
Total number of mobiles manufactured by company C–1
=(59+65+68)×1000
= 192000
Total number of mobiles manufactured by company C–2
=(62+67+72)×1000
= 201000
Total number of mobiles manufactured by company C–3
=(68+71+74)×1000
= 213000
Total number of mobiles manufactured by company C–4
=(59+62+ 65)×1000
= 186000
Hence company C–4 manufactured the least number of mobiles across all the years.