Indicate whether each of the following C# programming language identifi ers is legal or illegal. a. WeeklySales b. last character c. class d. MathClass e. myfi rstinitial f. phone# g....

Indicate whether each of the following C# programming

language identifi ers is legal or illegal.

a. WeeklySales

b. last character

c. class

d. MathClass

e. myfi rstinitial

f. phone#

g. abcdefghijklmnop

h. 23jordan

i. my_code

j. 90210

k. year2012Budget

l. abfSorority