An administrator needs to protect rive websites with SSL certificates Three of the websites have different domain names, and two of the websites share the domain name but have different subdomain prefixes. Which of the following SSL certificates should the administrator purchase to protect all the websites and be able to administer them easily at a later time?
A . One SAN certificate
B . One Unified Communications Certificate and one wildcard certificate
C . One wildcard certificate and two standard certificates
D . Five standard certificates

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;