01:28:05 Not yet answered Marked out of 1.00 29 If a firm has Plant assets at Jan,1,2020 as $100,000 and at Dec 31,2020 $120,000. During the year the firm sold plant assets with $30,000 cost and $20,000 for $12,000. The purchases of plant assets is Select one a. Zero b. $30,000 c. $50,000 d. $20,000 CLEAR MY CHOICE )