Kindly answer the given below question with an explanation

Refer to the following chart: Contact for Job Placement at Wake Forest University On-Campus Recruiting 10% Job Posting Websites 20% Networking and Connections 70% a. What is the name given to this type of chart? O Pie chart O Frequency polygon O Cumulative frequency polygon O Bar Chart b. Suppose that 1,000 graduates will start a new job shortly after graduation. Estimate the number of graduates whose first contact for employment occurred through networking and other connections. Number of graduates c. Would it be reasonable to conclude that about 90% of job placements were made through networking, connections, and job posting websites? O Yes O No